Home / 40,943.20-61,414.80-20,162.40

Finding the Fourth Proportional to 40,943.20, 61,414.80 and 20,162.40

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Solution

The fourth proportional to 40,943.20, 61,414.80 and 20,162.40 is: 30,243.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,943.20 : 61,414.80 = 20,162.40 : x
  2. Step 2: Convert to fraction form
    40,943.20/61,414.80 = 20,162.40/x
  3. Step 3: Cross multiply
    40,943.20x = 61,414.80 × 20,162.40
  4. Step 4: Simplify right side
    40,943.20x = 1,238,269,763.52
  5. Step 5: Solve for x
    x = 1,238,269,763.52/40,943.20
  6. Step 6: Final answer
    x = 30,243.60

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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.