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Finding the Fourth Proportional to 82,760,952.80, 123,928,852.80 and 65,613,123.20

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Solution

The fourth proportional to 82,760,952.80, 123,928,852.80 and 65,613,123.20 is: 98,251,153.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,760,952.80 : 123,928,852.80 = 65,613,123.20 : x
  2. Step 2: Convert to fraction form
    82,760,952.80/123,928,852.80 = 65,613,123.20/x
  3. Step 3: Cross multiply
    82,760,952.80x = 123,928,852.80 × 65,613,123.20
  4. Step 4: Simplify right side
    82,760,952.80x = 8,131,359,086,801,065
  5. Step 5: Solve for x
    x = 8,131,359,086,801,065/82,760,952.80
  6. Step 6: Final answer
    x = 98,251,153.61

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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.