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Finding the Fourth Proportional to 63,711.80, 87,934.47 and 42,201.80

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Solution

The fourth proportional to 63,711.80, 87,934.47 and 42,201.80 is: 58,246.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,711.80 : 87,934.47 = 42,201.80 : x
  2. Step 2: Convert to fraction form
    63,711.80/87,934.47 = 42,201.80/x
  3. Step 3: Cross multiply
    63,711.80x = 87,934.47 × 42,201.80
  4. Step 4: Simplify right side
    63,711.80x = 3,710,992,916.05
  5. Step 5: Solve for x
    x = 3,710,992,916.05/63,711.80
  6. Step 6: Final answer
    x = 58,246.56

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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.