Finding the Fourth Proportional to 77,430.62, 106,861.30 and 47,217.62
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Solution
The fourth proportional to 77,430.62, 106,861.30 and 47,217.62 is: 65,164.61
Step by Step Solution
- Step 1: Write the proportion equation
77,430.62 : 106,861.30 = 47,217.62 : x - Step 2: Convert to fraction form
77,430.62/106,861.30 = 47,217.62/x - Step 3: Cross multiply
77,430.62x = 106,861.30 × 47,217.62 - Step 4: Simplify right side
77,430.62x = 5,045,736,256.11 - Step 5: Solve for x
x = 5,045,736,256.11/77,430.62 - Step 6: Final answer
x = 65,164.61
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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.