Home / 71,113.08-98,134.38-39,279.48

Finding the Fourth Proportional to 71,113.08, 98,134.38 and 39,279.48

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Solution

The fourth proportional to 71,113.08, 98,134.38 and 39,279.48 is: 54,204.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,113.08 : 98,134.38 = 39,279.48 : x
  2. Step 2: Convert to fraction form
    71,113.08/98,134.38 = 39,279.48/x
  3. Step 3: Cross multiply
    71,113.08x = 98,134.38 × 39,279.48
  4. Step 4: Simplify right side
    71,113.08x = 3,854,667,416.52
  5. Step 5: Solve for x
    x = 3,854,667,416.52/71,113.08
  6. Step 6: Final answer
    x = 54,204.76

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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.