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Finding the Fourth Proportional to 63,147.78, 87,155.24 and 37,655.80

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Solution

The fourth proportional to 63,147.78, 87,155.24 and 37,655.80 is: 51,971.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,147.78 : 87,155.24 = 37,655.80 : x
  2. Step 2: Convert to fraction form
    63,147.78/87,155.24 = 37,655.80/x
  3. Step 3: Cross multiply
    63,147.78x = 87,155.24 × 37,655.80
  4. Step 4: Simplify right side
    63,147.78x = 3,281,900,286.39
  5. Step 5: Solve for x
    x = 3,281,900,286.39/63,147.78
  6. Step 6: Final answer
    x = 51,971.74

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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.