Home / 71,115.64-98,139.92-38,850.72

Finding the Fourth Proportional to 71,115.64, 98,139.92 and 38,850.72

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Solution

The fourth proportional to 71,115.64, 98,139.92 and 38,850.72 is: 53,614.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,115.64 : 98,139.92 = 38,850.72 : x
  2. Step 2: Convert to fraction form
    71,115.64/98,139.92 = 38,850.72/x
  3. Step 3: Cross multiply
    71,115.64x = 98,139.92 × 38,850.72
  4. Step 4: Simplify right side
    71,115.64x = 3,812,805,867.79
  5. Step 5: Solve for x
    x = 3,812,805,867.79/71,115.64
  6. Step 6: Final answer
    x = 53,614.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.