Home / 65,449.76-90,318.24-39,998.70

Finding the Fourth Proportional to 65,449.76, 90,318.24 and 39,998.70

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Solution

The fourth proportional to 65,449.76, 90,318.24 and 39,998.70 is: 55,196.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,449.76 : 90,318.24 = 39,998.70 : x
  2. Step 2: Convert to fraction form
    65,449.76/90,318.24 = 39,998.70/x
  3. Step 3: Cross multiply
    65,449.76x = 90,318.24 × 39,998.70
  4. Step 4: Simplify right side
    65,449.76x = 3,612,612,186.29
  5. Step 5: Solve for x
    x = 3,612,612,186.29/65,449.76
  6. Step 6: Final answer
    x = 55,196.73

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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.