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Finding the Fourth Proportional to 60,432, 90,359.52 and 55,138.32

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Solution

The fourth proportional to 60,432, 90,359.52 and 55,138.32 is: 82,444.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,432 : 90,359.52 = 55,138.32 : x
  2. Step 2: Convert to fraction form
    60,432/90,359.52 = 55,138.32/x
  3. Step 3: Cross multiply
    60,432x = 90,359.52 × 55,138.32
  4. Step 4: Simplify right side
    60,432x = 4,982,272,128.81
  5. Step 5: Solve for x
    x = 4,982,272,128.81/60,432
  6. Step 6: Final answer
    x = 82,444.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.