Finding the Fourth Proportional to 72,354,089.60, 108,497,956.80 and 31,943,772.80
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Solution
The fourth proportional to 72,354,089.60, 108,497,956.80 and 31,943,772.80 is: 47,901,011.55
Step by Step Solution
- Step 1: Write the proportion equation
72,354,089.60 : 108,497,956.80 = 31,943,772.80 : x - Step 2: Convert to fraction form
72,354,089.60/108,497,956.80 = 31,943,772.80/x - Step 3: Cross multiply
72,354,089.60x = 108,497,956.80 × 31,943,772.80 - Step 4: Simplify right side
72,354,089.60x = 3,465,834,081,283,415 - Step 5: Solve for x
x = 3,465,834,081,283,415/72,354,089.60 - Step 6: Final answer
x = 47,901,011.55
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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.