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Finding the Fourth Proportional to 63,287.92, 87,346.38 and 39,422.08

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Solution

The fourth proportional to 63,287.92, 87,346.38 and 39,422.08 is: 54,408.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,287.92 : 87,346.38 = 39,422.08 : x
  2. Step 2: Convert to fraction form
    63,287.92/87,346.38 = 39,422.08/x
  3. Step 3: Cross multiply
    63,287.92x = 87,346.38 × 39,422.08
  4. Step 4: Simplify right side
    63,287.92x = 3,443,375,980.07
  5. Step 5: Solve for x
    x = 3,443,375,980.07/63,287.92
  6. Step 6: Final answer
    x = 54,408.11

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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.