Home / 80,823.79-111,540.27-45,013.80

Finding the Fourth Proportional to 80,823.79, 111,540.27 and 45,013.80

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Solution

The fourth proportional to 80,823.79, 111,540.27 and 45,013.80 is: 62,120.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,823.79 : 111,540.27 = 45,013.80 : x
  2. Step 2: Convert to fraction form
    80,823.79/111,540.27 = 45,013.80/x
  3. Step 3: Cross multiply
    80,823.79x = 111,540.27 × 45,013.80
  4. Step 4: Simplify right side
    80,823.79x = 5,020,851,550.11
  5. Step 5: Solve for x
    x = 5,020,851,550.11/80,823.79
  6. Step 6: Final answer
    x = 62,120.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.