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Finding the Fourth Proportional to 74,714.92, 111,741.66 and 66,452.68

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Solution

The fourth proportional to 74,714.92, 111,741.66 and 66,452.68 is: 99,384.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,714.92 : 111,741.66 = 66,452.68 : x
  2. Step 2: Convert to fraction form
    74,714.92/111,741.66 = 66,452.68/x
  3. Step 3: Cross multiply
    74,714.92x = 111,741.66 × 66,452.68
  4. Step 4: Simplify right side
    74,714.92x = 7,425,532,774.65
  5. Step 5: Solve for x
    x = 7,425,532,774.65/74,714.92
  6. Step 6: Final answer
    x = 99,384.87

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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.