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Finding the Fourth Proportional to 72,170.40, 108,253.32 and 22,248.48

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Solution

The fourth proportional to 72,170.40, 108,253.32 and 22,248.48 is: 33,372.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,170.40 : 108,253.32 = 22,248.48 : x
  2. Step 2: Convert to fraction form
    72,170.40/108,253.32 = 22,248.48/x
  3. Step 3: Cross multiply
    72,170.40x = 108,253.32 × 22,248.48
  4. Step 4: Simplify right side
    72,170.40x = 2,408,471,824.95
  5. Step 5: Solve for x
    x = 2,408,471,824.95/72,170.40
  6. Step 6: Final answer
    x = 33,372.02

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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.