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Finding the Fourth Proportional to 64,627.12, 89,149 and 37,763.92

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Solution

The fourth proportional to 64,627.12, 89,149 and 37,763.92 is: 52,092.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,627.12 : 89,149 = 37,763.92 : x
  2. Step 2: Convert to fraction form
    64,627.12/89,149 = 37,763.92/x
  3. Step 3: Cross multiply
    64,627.12x = 89,149 × 37,763.92
  4. Step 4: Simplify right side
    64,627.12x = 3,366,615,704.08
  5. Step 5: Solve for x
    x = 3,366,615,704.08/64,627.12
  6. Step 6: Final answer
    x = 52,092.92

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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.