Finding the Fourth Proportional to 81,471,509.96, 112,726,748.08 and 71,039,265.26
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Solution
The fourth proportional to 81,471,509.96, 112,726,748.08 and 71,039,265.26 is: 98,292,340.02
Step by Step Solution
- Step 1: Write the proportion equation
81,471,509.96 : 112,726,748.08 = 71,039,265.26 : x - Step 2: Convert to fraction form
81,471,509.96/112,726,748.08 = 71,039,265.26/x - Step 3: Cross multiply
81,471,509.96x = 112,726,748.08 × 71,039,265.26 - Step 4: Simplify right side
81,471,509.96x = 8,008,025,358,752,316 - Step 5: Solve for x
x = 8,008,025,358,752,316/81,471,509.96 - Step 6: Final answer
x = 98,292,340.02
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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.