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Finding the Fourth Proportional to 72,442.64, 108,679.32 and 22,521.52

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Solution

The fourth proportional to 72,442.64, 108,679.32 and 22,521.52 is: 33,787.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,442.64 : 108,679.32 = 22,521.52 : x
  2. Step 2: Convert to fraction form
    72,442.64/108,679.32 = 22,521.52/x
  3. Step 3: Cross multiply
    72,442.64x = 108,679.32 × 22,521.52
  4. Step 4: Simplify right side
    72,442.64x = 2,447,623,478.97
  5. Step 5: Solve for x
    x = 2,447,623,478.97/72,442.64
  6. Step 6: Final answer
    x = 33,787.06

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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.