Home / 65,610.74-90,540.18-38,761.88

Finding the Fourth Proportional to 65,610.74, 90,540.18 and 38,761.88

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Solution

The fourth proportional to 65,610.74, 90,540.18 and 38,761.88 is: 53,489.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,610.74 : 90,540.18 = 38,761.88 : x
  2. Step 2: Convert to fraction form
    65,610.74/90,540.18 = 38,761.88/x
  3. Step 3: Cross multiply
    65,610.74x = 90,540.18 × 38,761.88
  4. Step 4: Simplify right side
    65,610.74x = 3,509,507,592.34
  5. Step 5: Solve for x
    x = 3,509,507,592.34/65,610.74
  6. Step 6: Final answer
    x = 53,489.83

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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.