Home / 67,142.40-100,727.73-19,753.52

Finding the Fourth Proportional to 67,142.40, 100,727.73 and 19,753.52

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Solution

The fourth proportional to 67,142.40, 100,727.73 and 19,753.52 is: 29,634.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,142.40 : 100,727.73 = 19,753.52 : x
  2. Step 2: Convert to fraction form
    67,142.40/100,727.73 = 19,753.52/x
  3. Step 3: Cross multiply
    67,142.40x = 100,727.73 × 19,753.52
  4. Step 4: Simplify right side
    67,142.40x = 1,989,727,229.11
  5. Step 5: Solve for x
    x = 1,989,727,229.11/67,142.40
  6. Step 6: Final answer
    x = 29,634.44

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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.