Home / 40,988.25-61,442.42-20,997.72

Finding the Fourth Proportional to 40,988.25, 61,442.42 and 20,997.72

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Solution

The fourth proportional to 40,988.25, 61,442.42 and 20,997.72 is: 31,476.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,988.25 : 61,442.42 = 20,997.72 : x
  2. Step 2: Convert to fraction form
    40,988.25/61,442.42 = 20,997.72/x
  3. Step 3: Cross multiply
    40,988.25x = 61,442.42 × 20,997.72
  4. Step 4: Simplify right side
    40,988.25x = 1,290,150,626.29
  5. Step 5: Solve for x
    x = 1,290,150,626.29/40,988.25
  6. Step 6: Final answer
    x = 31,476.11

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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.