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Finding the Fourth Proportional to 71,500.55, 107,279.07 and 27,139.07

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Solution

The fourth proportional to 71,500.55, 107,279.07 and 27,139.07 is: 40,719.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,500.55 : 107,279.07 = 27,139.07 : x
  2. Step 2: Convert to fraction form
    71,500.55/107,279.07 = 27,139.07/x
  3. Step 3: Cross multiply
    71,500.55x = 107,279.07 × 27,139.07
  4. Step 4: Simplify right side
    71,500.55x = 2,911,454,356.69
  5. Step 5: Solve for x
    x = 2,911,454,356.69/71,500.55
  6. Step 6: Final answer
    x = 40,719.33

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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.