Home / 65,418.12-90,275.58-38,198.88

Finding the Fourth Proportional to 65,418.12, 90,275.58 and 38,198.88

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Solution

The fourth proportional to 65,418.12, 90,275.58 and 38,198.88 is: 52,713.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,418.12 : 90,275.58 = 38,198.88 : x
  2. Step 2: Convert to fraction form
    65,418.12/90,275.58 = 38,198.88/x
  3. Step 3: Cross multiply
    65,418.12x = 90,275.58 × 38,198.88
  4. Step 4: Simplify right side
    65,418.12x = 3,448,426,047.35
  5. Step 5: Solve for x
    x = 3,448,426,047.35/65,418.12
  6. Step 6: Final answer
    x = 52,713.62

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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.