Home / 45,140.62-67,727.13-20,178.58

Finding the Fourth Proportional to 45,140.62, 67,727.13 and 20,178.58

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Solution

The fourth proportional to 45,140.62, 67,727.13 and 20,178.58 is: 30,275.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,140.62 : 67,727.13 = 20,178.58 : x
  2. Step 2: Convert to fraction form
    45,140.62/67,727.13 = 20,178.58/x
  3. Step 3: Cross multiply
    45,140.62x = 67,727.13 × 20,178.58
  4. Step 4: Simplify right side
    45,140.62x = 1,366,637,310.88
  5. Step 5: Solve for x
    x = 1,366,637,310.88/45,140.62
  6. Step 6: Final answer
    x = 30,275.11

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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.