Home / 87,187.32-120,355.07-58,931.28

Finding the Fourth Proportional to 87,187.32, 120,355.07 and 58,931.28

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Solution

The fourth proportional to 87,187.32, 120,355.07 and 58,931.28 is: 81,349.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,187.32 : 120,355.07 = 58,931.28 : x
  2. Step 2: Convert to fraction form
    87,187.32/120,355.07 = 58,931.28/x
  3. Step 3: Cross multiply
    87,187.32x = 120,355.07 × 58,931.28
  4. Step 4: Simplify right side
    87,187.32x = 7,092,678,034.93
  5. Step 5: Solve for x
    x = 7,092,678,034.93/87,187.32
  6. Step 6: Final answer
    x = 81,349.88

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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.