Home / 80,931.44-111,645.69-54,080.55

Finding the Fourth Proportional to 80,931.44, 111,645.69 and 54,080.55

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Solution

The fourth proportional to 80,931.44, 111,645.69 and 54,080.55 is: 74,604.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,931.44 : 111,645.69 = 54,080.55 : x
  2. Step 2: Convert to fraction form
    80,931.44/111,645.69 = 54,080.55/x
  3. Step 3: Cross multiply
    80,931.44x = 111,645.69 × 54,080.55
  4. Step 4: Simplify right side
    80,931.44x = 6,037,860,320.33
  5. Step 5: Solve for x
    x = 6,037,860,320.33/80,931.44
  6. Step 6: Final answer
    x = 74,604.64

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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.