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Finding the Fourth Proportional to 72,098.42, 108,139.11 and 22,178.42

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Solution

The fourth proportional to 72,098.42, 108,139.11 and 22,178.42 is: 33,265.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,098.42 : 108,139.11 = 22,178.42 : x
  2. Step 2: Convert to fraction form
    72,098.42/108,139.11 = 22,178.42/x
  3. Step 3: Cross multiply
    72,098.42x = 108,139.11 × 22,178.42
  4. Step 4: Simplify right side
    72,098.42x = 2,398,354,600.01
  5. Step 5: Solve for x
    x = 2,398,354,600.01/72,098.42
  6. Step 6: Final answer
    x = 33,265.01

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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.