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Finding the Fourth Proportional to 80,954.61, 111,714.90 and 45,150.68

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Solution

The fourth proportional to 80,954.61, 111,714.90 and 45,150.68 is: 62,306.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,954.61 : 111,714.90 = 45,150.68 : x
  2. Step 2: Convert to fraction form
    80,954.61/111,714.90 = 45,150.68/x
  3. Step 3: Cross multiply
    80,954.61x = 111,714.90 × 45,150.68
  4. Step 4: Simplify right side
    80,954.61x = 5,044,003,811.10
  5. Step 5: Solve for x
    x = 5,044,003,811.10/80,954.61
  6. Step 6: Final answer
    x = 62,306.57

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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.