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Finding the Fourth Proportional to 80,705.97, 111,377.84 and 67,254.71

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Solution

The fourth proportional to 80,705.97, 111,377.84 and 67,254.71 is: 92,814.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,705.97 : 111,377.84 = 67,254.71 : x
  2. Step 2: Convert to fraction form
    80,705.97/111,377.84 = 67,254.71/x
  3. Step 3: Cross multiply
    80,705.97x = 111,377.84 × 67,254.71
  4. Step 4: Simplify right side
    80,705.97x = 7,490,683,436.46
  5. Step 5: Solve for x
    x = 7,490,683,436.46/80,705.97
  6. Step 6: Final answer
    x = 92,814.49

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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.