Home / 65,403.43-90,245.87-38,542.29

Finding the Fourth Proportional to 65,403.43, 90,245.87 and 38,542.29

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Solution

The fourth proportional to 65,403.43, 90,245.87 and 38,542.29 is: 53,181.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,403.43 : 90,245.87 = 38,542.29 : x
  2. Step 2: Convert to fraction form
    65,403.43/90,245.87 = 38,542.29/x
  3. Step 3: Cross multiply
    65,403.43x = 90,245.87 × 38,542.29
  4. Step 4: Simplify right side
    65,403.43x = 3,478,282,278.10
  5. Step 5: Solve for x
    x = 3,478,282,278.10/65,403.43
  6. Step 6: Final answer
    x = 53,181.95

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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.