Home / 90,402.43-124,805.01-61,765.15

Finding the Fourth Proportional to 90,402.43, 124,805.01 and 61,765.15

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Solution

The fourth proportional to 90,402.43, 124,805.01 and 61,765.15 is: 85,269.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,402.43 : 124,805.01 = 61,765.15 : x
  2. Step 2: Convert to fraction form
    90,402.43/124,805.01 = 61,765.15/x
  3. Step 3: Cross multiply
    90,402.43x = 124,805.01 × 61,765.15
  4. Step 4: Simplify right side
    90,402.43x = 7,708,600,163.40
  5. Step 5: Solve for x
    x = 7,708,600,163.40/90,402.43
  6. Step 6: Final answer
    x = 85,269.83

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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.