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Finding the Fourth Proportional to 57,872.04, 79,865.10 and 32,721

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Solution

The fourth proportional to 57,872.04, 79,865.10 and 32,721 is: 45,155.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,872.04 : 79,865.10 = 32,721 : x
  2. Step 2: Convert to fraction form
    57,872.04/79,865.10 = 32,721/x
  3. Step 3: Cross multiply
    57,872.04x = 79,865.10 × 32,721
  4. Step 4: Simplify right side
    57,872.04x = 2,613,265,937.10
  5. Step 5: Solve for x
    x = 2,613,265,937.10/57,872.04
  6. Step 6: Final answer
    x = 45,155.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.