Home / 42,839.20-64,225.84-21,761.92

Finding the Fourth Proportional to 42,839.20, 64,225.84 and 21,761.92

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Solution

The fourth proportional to 42,839.20, 64,225.84 and 21,761.92 is: 32,626.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,839.20 : 64,225.84 = 21,761.92 : x
  2. Step 2: Convert to fraction form
    42,839.20/64,225.84 = 21,761.92/x
  3. Step 3: Cross multiply
    42,839.20x = 64,225.84 × 21,761.92
  4. Step 4: Simplify right side
    42,839.20x = 1,397,677,592.01
  5. Step 5: Solve for x
    x = 1,397,677,592.01/42,839.20
  6. Step 6: Final answer
    x = 32,626.14

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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.