Home / 71,143.10-98,177.45-39,311.72

Finding the Fourth Proportional to 71,143.10, 98,177.45 and 39,311.72

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Solution

The fourth proportional to 71,143.10, 98,177.45 and 39,311.72 is: 54,250.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,143.10 : 98,177.45 = 39,311.72 : x
  2. Step 2: Convert to fraction form
    71,143.10/98,177.45 = 39,311.72/x
  3. Step 3: Cross multiply
    71,143.10x = 98,177.45 × 39,311.72
  4. Step 4: Simplify right side
    71,143.10x = 3,859,524,424.71
  5. Step 5: Solve for x
    x = 3,859,524,424.71/71,143.10
  6. Step 6: Final answer
    x = 54,250.16

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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.