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Finding the Fourth Proportional to 69,189.68, 103,703.87 and 31,753.71

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Solution

The fourth proportional to 69,189.68, 103,703.87 and 31,753.71 is: 47,593.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,189.68 : 103,703.87 = 31,753.71 : x
  2. Step 2: Convert to fraction form
    69,189.68/103,703.87 = 31,753.71/x
  3. Step 3: Cross multiply
    69,189.68x = 103,703.87 × 31,753.71
  4. Step 4: Simplify right side
    69,189.68x = 3,292,982,693.24
  5. Step 5: Solve for x
    x = 3,292,982,693.24/69,189.68
  6. Step 6: Final answer
    x = 47,593.55

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1.5x scale

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.