Home / 71,111.67-98,132.23-39,279.88

Finding the Fourth Proportional to 71,111.67, 98,132.23 and 39,279.88

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Solution

The fourth proportional to 71,111.67, 98,132.23 and 39,279.88 is: 54,205.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,111.67 : 98,132.23 = 39,279.88 : x
  2. Step 2: Convert to fraction form
    71,111.67/98,132.23 = 39,279.88/x
  3. Step 3: Cross multiply
    71,111.67x = 98,132.23 × 39,279.88
  4. Step 4: Simplify right side
    71,111.67x = 3,854,622,218.53
  5. Step 5: Solve for x
    x = 3,854,622,218.53/71,111.67
  6. Step 6: Final answer
    x = 54,205.20

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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.