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Finding the Fourth Proportional to 63,138.96, 87,127.11 and 36,281.52

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Solution

The fourth proportional to 63,138.96, 87,127.11 and 36,281.52 is: 50,065.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,138.96 : 87,127.11 = 36,281.52 : x
  2. Step 2: Convert to fraction form
    63,138.96/87,127.11 = 36,281.52/x
  3. Step 3: Cross multiply
    63,138.96x = 87,127.11 × 36,281.52
  4. Step 4: Simplify right side
    63,138.96x = 3,161,103,984.01
  5. Step 5: Solve for x
    x = 3,161,103,984.01/63,138.96
  6. Step 6: Final answer
    x = 50,065.82

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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.