Home / 65,470.60-90,327.88-38,240.43

Finding the Fourth Proportional to 65,470.60, 90,327.88 and 38,240.43

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Solution

The fourth proportional to 65,470.60, 90,327.88 and 38,240.43 is: 52,759.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,470.60 : 90,327.88 = 38,240.43 : x
  2. Step 2: Convert to fraction form
    65,470.60/90,327.88 = 38,240.43/x
  3. Step 3: Cross multiply
    65,470.60x = 90,327.88 × 38,240.43
  4. Step 4: Simplify right side
    65,470.60x = 3,454,176,466.16
  5. Step 5: Solve for x
    x = 3,454,176,466.16/65,470.60
  6. Step 6: Final answer
    x = 52,759.20

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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.