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Finding the Fourth Proportional to 80,934.64, 111,689.88 and 45,123.86

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Solution

The fourth proportional to 80,934.64, 111,689.88 and 45,123.86 is: 62,270.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,934.64 : 111,689.88 = 45,123.86 : x
  2. Step 2: Convert to fraction form
    80,934.64/111,689.88 = 45,123.86/x
  3. Step 3: Cross multiply
    80,934.64x = 111,689.88 × 45,123.86
  4. Step 4: Simplify right side
    80,934.64x = 5,039,878,508.54
  5. Step 5: Solve for x
    x = 5,039,878,508.54/80,934.64
  6. Step 6: Final answer
    x = 62,270.97

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1.5x scale

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.