Home / 65,549.28-90,469.62-38,690.04

Finding the Fourth Proportional to 65,549.28, 90,469.62 and 38,690.04

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Solution

The fourth proportional to 65,549.28, 90,469.62 and 38,690.04 is: 53,399.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,549.28 : 90,469.62 = 38,690.04 : x
  2. Step 2: Convert to fraction form
    65,549.28/90,469.62 = 38,690.04/x
  3. Step 3: Cross multiply
    65,549.28x = 90,469.62 × 38,690.04
  4. Step 4: Simplify right side
    65,549.28x = 3,500,273,216.58
  5. Step 5: Solve for x
    x = 3,500,273,216.58/65,549.28
  6. Step 6: Final answer
    x = 53,399.11

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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.