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Finding the Fourth Proportional to 67,614.80, 100,981.06 and 57,511.87

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Solution

The fourth proportional to 67,614.80, 100,981.06 and 57,511.87 is: 85,892.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,614.80 : 100,981.06 = 57,511.87 : x
  2. Step 2: Convert to fraction form
    67,614.80/100,981.06 = 57,511.87/x
  3. Step 3: Cross multiply
    67,614.80x = 100,981.06 × 57,511.87
  4. Step 4: Simplify right side
    67,614.80x = 5,807,609,198.95
  5. Step 5: Solve for x
    x = 5,807,609,198.95/67,614.80
  6. Step 6: Final answer
    x = 85,892.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.