Finding the Fourth Proportional to 72,230,966.10, 108,346,449.15 and 66,703,979.70
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Solution
The fourth proportional to 72,230,966.10, 108,346,449.15 and 66,703,979.70 is: 100,055,969.55
Step by Step Solution
- Step 1: Write the proportion equation
72,230,966.10 : 108,346,449.15 = 66,703,979.70 : x - Step 2: Convert to fraction form
72,230,966.10/108,346,449.15 = 66,703,979.70/x - Step 3: Cross multiply
72,230,966.10x = 108,346,449.15 × 66,703,979.70 - Step 4: Simplify right side
72,230,966.10x = 7,227,139,344,668,683 - Step 5: Solve for x
x = 7,227,139,344,668,683/72,230,966.10 - Step 6: Final answer
x = 100,055,969.55
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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.