Home / 71,388.78-107,131.68-38,132.76

Finding the Fourth Proportional to 71,388.78, 107,131.68 and 38,132.76

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Solution

The fourth proportional to 71,388.78, 107,131.68 and 38,132.76 is: 57,225.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,388.78 : 107,131.68 = 38,132.76 : x
  2. Step 2: Convert to fraction form
    71,388.78/107,131.68 = 38,132.76/x
  3. Step 3: Cross multiply
    71,388.78x = 107,131.68 × 38,132.76
  4. Step 4: Simplify right side
    71,388.78x = 4,085,226,641.84
  5. Step 5: Solve for x
    x = 4,085,226,641.84/71,388.78
  6. Step 6: Final answer
    x = 57,225.05

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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.