Home / 80,351.28-110,829.60-55,157.04

Finding the Fourth Proportional to 80,351.28, 110,829.60 and 55,157.04

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Solution

The fourth proportional to 80,351.28, 110,829.60 and 55,157.04 is: 76,078.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,351.28 : 110,829.60 = 55,157.04 : x
  2. Step 2: Convert to fraction form
    80,351.28/110,829.60 = 55,157.04/x
  3. Step 3: Cross multiply
    80,351.28x = 110,829.60 × 55,157.04
  4. Step 4: Simplify right side
    80,351.28x = 6,113,032,680.38
  5. Step 5: Solve for x
    x = 6,113,032,680.38/80,351.28
  6. Step 6: Final answer
    x = 76,078.85

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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.