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Finding the Fourth Proportional to 72,921.32, 109,384.32 and 23,001.88

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Solution

The fourth proportional to 72,921.32, 109,384.32 and 23,001.88 is: 34,503.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,921.32 : 109,384.32 = 23,001.88 : x
  2. Step 2: Convert to fraction form
    72,921.32/109,384.32 = 23,001.88/x
  3. Step 3: Cross multiply
    72,921.32x = 109,384.32 × 23,001.88
  4. Step 4: Simplify right side
    72,921.32x = 2,516,045,002.52
  5. Step 5: Solve for x
    x = 2,516,045,002.52/72,921.32
  6. Step 6: Final answer
    x = 34,503.56

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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.