Home / 60,165.28-90,248.10-20,721.88

Finding the Fourth Proportional to 60,165.28, 90,248.10 and 20,721.88

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Solution

The fourth proportional to 60,165.28, 90,248.10 and 20,721.88 is: 31,082.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,165.28 : 90,248.10 = 20,721.88 : x
  2. Step 2: Convert to fraction form
    60,165.28/90,248.10 = 20,721.88/x
  3. Step 3: Cross multiply
    60,165.28x = 90,248.10 × 20,721.88
  4. Step 4: Simplify right side
    60,165.28x = 1,870,110,298.43
  5. Step 5: Solve for x
    x = 1,870,110,298.43/60,165.28
  6. Step 6: Final answer
    x = 31,082.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.