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Finding the Fourth Proportional to 64,660.47, 89,229.80 and 37,432.78

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Solution

The fourth proportional to 64,660.47, 89,229.80 and 37,432.78 is: 51,656.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,660.47 : 89,229.80 = 37,432.78 : x
  2. Step 2: Convert to fraction form
    64,660.47/89,229.80 = 37,432.78/x
  3. Step 3: Cross multiply
    64,660.47x = 89,229.80 × 37,432.78
  4. Step 4: Simplify right side
    64,660.47x = 3,340,119,343.35
  5. Step 5: Solve for x
    x = 3,340,119,343.35/64,660.47
  6. Step 6: Final answer
    x = 51,656.28

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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.