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Finding the Fourth Proportional to 61,419.60, 84,805.24 and 60,438.71

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Solution

The fourth proportional to 61,419.60, 84,805.24 and 60,438.71 is: 83,450.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,419.60 : 84,805.24 = 60,438.71 : x
  2. Step 2: Convert to fraction form
    61,419.60/84,805.24 = 60,438.71/x
  3. Step 3: Cross multiply
    61,419.60x = 84,805.24 × 60,438.71
  4. Step 4: Simplify right side
    61,419.60x = 5,125,519,004.65
  5. Step 5: Solve for x
    x = 5,125,519,004.65/61,419.60
  6. Step 6: Final answer
    x = 83,450.87

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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.