Home / 80,987.67-111,761.64-45,176.76

Finding the Fourth Proportional to 80,987.67, 111,761.64 and 45,176.76

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Solution

The fourth proportional to 80,987.67, 111,761.64 and 45,176.76 is: 62,343.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,987.67 : 111,761.64 = 45,176.76 : x
  2. Step 2: Convert to fraction form
    80,987.67/111,761.64 = 45,176.76/x
  3. Step 3: Cross multiply
    80,987.67x = 111,761.64 × 45,176.76
  4. Step 4: Simplify right side
    80,987.67x = 5,049,028,787.49
  5. Step 5: Solve for x
    x = 5,049,028,787.49/80,987.67
  6. Step 6: Final answer
    x = 62,343.18

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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.