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Finding the Fourth Proportional to 62,872.39, 86,765.72 and 34,579.90

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Solution

The fourth proportional to 62,872.39, 86,765.72 and 34,579.90 is: 47,721.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,872.39 : 86,765.72 = 34,579.90 : x
  2. Step 2: Convert to fraction form
    62,872.39/86,765.72 = 34,579.90/x
  3. Step 3: Cross multiply
    62,872.39x = 86,765.72 × 34,579.90
  4. Step 4: Simplify right side
    62,872.39x = 3,000,349,921.03
  5. Step 5: Solve for x
    x = 3,000,349,921.03/62,872.39
  6. Step 6: Final answer
    x = 47,721.26

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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.