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Finding the Fourth Proportional to 63,891.28, 87,979.80 and 62,475.16

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Solution

The fourth proportional to 63,891.28, 87,979.80 and 62,475.16 is: 86,029.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,891.28 : 87,979.80 = 62,475.16 : x
  2. Step 2: Convert to fraction form
    63,891.28/87,979.80 = 62,475.16/x
  3. Step 3: Cross multiply
    63,891.28x = 87,979.80 × 62,475.16
  4. Step 4: Simplify right side
    63,891.28x = 5,496,552,081.77
  5. Step 5: Solve for x
    x = 5,496,552,081.77/63,891.28
  6. Step 6: Final answer
    x = 86,029.77

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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.