Home / 65,418.24-90,280.12-38,561.88

Finding the Fourth Proportional to 65,418.24, 90,280.12 and 38,561.88

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Solution

The fourth proportional to 65,418.24, 90,280.12 and 38,561.88 is: 53,217.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,418.24 : 90,280.12 = 38,561.88 : x
  2. Step 2: Convert to fraction form
    65,418.24/90,280.12 = 38,561.88/x
  3. Step 3: Cross multiply
    65,418.24x = 90,280.12 × 38,561.88
  4. Step 4: Simplify right side
    65,418.24x = 3,481,371,153.83
  5. Step 5: Solve for x
    x = 3,481,371,153.83/65,418.24
  6. Step 6: Final answer
    x = 53,217.13

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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.