Finding the Fourth Proportional to 86,508,064.80, 129,762,097.20 and 76,430,368.80
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Solution
The fourth proportional to 86,508,064.80, 129,762,097.20 and 76,430,368.80 is: 114,645,553.20
Step by Step Solution
- Step 1: Write the proportion equation
86,508,064.80 : 129,762,097.20 = 76,430,368.80 : x - Step 2: Convert to fraction form
86,508,064.80/129,762,097.20 = 76,430,368.80/x - Step 3: Cross multiply
86,508,064.80x = 129,762,097.20 × 76,430,368.80 - Step 4: Simplify right side
86,508,064.80x = 9,917,764,945,257,448 - Step 5: Solve for x
x = 9,917,764,945,257,448/86,508,064.80 - Step 6: Final answer
x = 114,645,553.20
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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.