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Finding the Fourth Proportional to 87,859, 131,530.02 and 54,471.88

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Solution

The fourth proportional to 87,859, 131,530.02 and 54,471.88 is: 81,547.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,859 : 131,530.02 = 54,471.88 : x
  2. Step 2: Convert to fraction form
    87,859/131,530.02 = 54,471.88/x
  3. Step 3: Cross multiply
    87,859x = 131,530.02 × 54,471.88
  4. Step 4: Simplify right side
    87,859x = 7,164,687,465.84
  5. Step 5: Solve for x
    x = 7,164,687,465.84/87,859
  6. Step 6: Final answer
    x = 81,547.56

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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.