Home / 45,121.12-67,695.52-20,182.16

Finding the Fourth Proportional to 45,121.12, 67,695.52 and 20,182.16

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Solution

The fourth proportional to 45,121.12, 67,695.52 and 20,182.16 is: 30,279.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,121.12 : 67,695.52 = 20,182.16 : x
  2. Step 2: Convert to fraction form
    45,121.12/67,695.52 = 20,182.16/x
  3. Step 3: Cross multiply
    45,121.12x = 67,695.52 × 20,182.16
  4. Step 4: Simplify right side
    45,121.12x = 1,366,241,815.92
  5. Step 5: Solve for x
    x = 1,366,241,815.92/45,121.12
  6. Step 6: Final answer
    x = 30,279.43

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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.