Home / 80,930.89-111,676.66-45,117.55

Finding the Fourth Proportional to 80,930.89, 111,676.66 and 45,117.55

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Solution

The fourth proportional to 80,930.89, 111,676.66 and 45,117.55 is: 62,257.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,930.89 : 111,676.66 = 45,117.55 : x
  2. Step 2: Convert to fraction form
    80,930.89/111,676.66 = 45,117.55/x
  3. Step 3: Cross multiply
    80,930.89x = 111,676.66 × 45,117.55
  4. Step 4: Simplify right side
    80,930.89x = 5,038,577,291.38
  5. Step 5: Solve for x
    x = 5,038,577,291.38/80,930.89
  6. Step 6: Final answer
    x = 62,257.78

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1.5x scale

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.