Home / 40,986.85-61,480.28-20,207.65

Finding the Fourth Proportional to 40,986.85, 61,480.28 and 20,207.65

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Solution

The fourth proportional to 40,986.85, 61,480.28 and 20,207.65 is: 30,311.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,986.85 : 61,480.28 = 20,207.65 : x
  2. Step 2: Convert to fraction form
    40,986.85/61,480.28 = 20,207.65/x
  3. Step 3: Cross multiply
    40,986.85x = 61,480.28 × 20,207.65
  4. Step 4: Simplify right side
    40,986.85x = 1,242,371,879.10
  5. Step 5: Solve for x
    x = 1,242,371,879.10/40,986.85
  6. Step 6: Final answer
    x = 30,311.48

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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.