Finding the Fourth Proportional to 72,250,711.68, 99,706,034.16 and 39,210,952.08
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Solution
The fourth proportional to 72,250,711.68, 99,706,034.16 and 39,210,952.08 is: 54,111,142.11
Step by Step Solution
- Step 1: Write the proportion equation
72,250,711.68 : 99,706,034.16 = 39,210,952.08 : x - Step 2: Convert to fraction form
72,250,711.68/99,706,034.16 = 39,210,952.08/x - Step 3: Cross multiply
72,250,711.68x = 99,706,034.16 × 39,210,952.08 - Step 4: Simplify right side
72,250,711.68x = 3,909,568,527,534,602.50 - Step 5: Solve for x
x = 3,909,568,527,534,602.50/72,250,711.68 - Step 6: Final answer
x = 54,111,142.11
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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.