Home / 40,426.20-60,639.30-20,743.20

Finding the Fourth Proportional to 40,426.20, 60,639.30 and 20,743.20

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Solution

The fourth proportional to 40,426.20, 60,639.30 and 20,743.20 is: 31,114.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,426.20 : 60,639.30 = 20,743.20 : x
  2. Step 2: Convert to fraction form
    40,426.20/60,639.30 = 20,743.20/x
  3. Step 3: Cross multiply
    40,426.20x = 60,639.30 × 20,743.20
  4. Step 4: Simplify right side
    40,426.20x = 1,257,853,127.76
  5. Step 5: Solve for x
    x = 1,257,853,127.76/40,426.20
  6. Step 6: Final answer
    x = 31,114.80

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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.