Home / 40,920.80-61,381.20-20,184.80

Finding the Fourth Proportional to 40,920.80, 61,381.20 and 20,184.80

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Solution

The fourth proportional to 40,920.80, 61,381.20 and 20,184.80 is: 30,277.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,920.80 : 61,381.20 = 20,184.80 : x
  2. Step 2: Convert to fraction form
    40,920.80/61,381.20 = 20,184.80/x
  3. Step 3: Cross multiply
    40,920.80x = 61,381.20 × 20,184.80
  4. Step 4: Simplify right side
    40,920.80x = 1,238,967,245.76
  5. Step 5: Solve for x
    x = 1,238,967,245.76/40,920.80
  6. Step 6: Final answer
    x = 30,277.20

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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.