Home / 45,337.20-67,973.40-20,356.80

Finding the Fourth Proportional to 45,337.20, 67,973.40 and 20,356.80

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Solution

The fourth proportional to 45,337.20, 67,973.40 and 20,356.80 is: 30,520.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,337.20 : 67,973.40 = 20,356.80 : x
  2. Step 2: Convert to fraction form
    45,337.20/67,973.40 = 20,356.80/x
  3. Step 3: Cross multiply
    45,337.20x = 67,973.40 × 20,356.80
  4. Step 4: Simplify right side
    45,337.20x = 1,383,720,909.12
  5. Step 5: Solve for x
    x = 1,383,720,909.12/45,337.20
  6. Step 6: Final answer
    x = 30,520.65

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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.