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Finding the Fourth Proportional to 45,320, 67,963.52 and 15,729.92

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Solution

The fourth proportional to 45,320, 67,963.52 and 15,729.92 is: 23,589.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,320 : 67,963.52 = 15,729.92 : x
  2. Step 2: Convert to fraction form
    45,320/67,963.52 = 15,729.92/x
  3. Step 3: Cross multiply
    45,320x = 67,963.52 × 15,729.92
  4. Step 4: Simplify right side
    45,320x = 1,069,060,732.52
  5. Step 5: Solve for x
    x = 1,069,060,732.52/45,320
  6. Step 6: Final answer
    x = 23,589.16

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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.