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Finding the Fourth Proportional to 66,494.10, 99,609.92 and 49,872.90

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Solution

The fourth proportional to 66,494.10, 99,609.92 and 49,872.90 is: 74,710.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,494.10 : 99,609.92 = 49,872.90 : x
  2. Step 2: Convert to fraction form
    66,494.10/99,609.92 = 49,872.90/x
  3. Step 3: Cross multiply
    66,494.10x = 99,609.92 × 49,872.90
  4. Step 4: Simplify right side
    66,494.10x = 4,967,835,579.17
  5. Step 5: Solve for x
    x = 4,967,835,579.17/66,494.10
  6. Step 6: Final answer
    x = 74,710.92

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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.