Finding the Fourth Proportional to 80,779,039,659.70, 121,168,559,489.55 and 47,719,157,931.70
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Solution
The fourth proportional to 80,779,039,659.70, 121,168,559,489.55 and 47,719,157,931.70 is: 71,578,736,897.55
Step by Step Solution
- Step 1: Write the proportion equation
80,779,039,659.70 : 121,168,559,489.55 = 47,719,157,931.70 : x - Step 2: Convert to fraction form
80,779,039,659.70/121,168,559,489.55 = 47,719,157,931.70/x - Step 3: Cross multiply
80,779,039,659.70x = 121,168,559,489.55 × 47,719,157,931.70 - Step 4: Simplify right side
80,779,039,659.70x = 5,782,061,626,638,423,031,808 - Step 5: Solve for x
x = 5,782,061,626,638,423,031,808/80,779,039,659.70 - Step 6: Final answer
x = 71,578,736,897.55
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Double scale
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Similar ratio
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.