Finding the Fourth Proportional to 87,745,484.70, 121,214,899.35 and 70,081,194.42
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Solution
The fourth proportional to 87,745,484.70, 121,214,899.35 and 70,081,194.42 is: 96,812,787.09
Step by Step Solution
- Step 1: Write the proportion equation
87,745,484.70 : 121,214,899.35 = 70,081,194.42 : x - Step 2: Convert to fraction form
87,745,484.70/121,214,899.35 = 70,081,194.42/x - Step 3: Cross multiply
87,745,484.70x = 121,214,899.35 × 70,081,194.42 - Step 4: Simplify right side
87,745,484.70x = 8,494,884,927,948,081 - Step 5: Solve for x
x = 8,494,884,927,948,081/87,745,484.70 - Step 6: Final answer
x = 96,812,787.09
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.