Home / 80,983.72-111,761.40-54,137.08

Finding the Fourth Proportional to 80,983.72, 111,761.40 and 54,137.08

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Solution

The fourth proportional to 80,983.72, 111,761.40 and 54,137.08 is: 74,711.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,983.72 : 111,761.40 = 54,137.08 : x
  2. Step 2: Convert to fraction form
    80,983.72/111,761.40 = 54,137.08/x
  3. Step 3: Cross multiply
    80,983.72x = 111,761.40 × 54,137.08
  4. Step 4: Simplify right side
    80,983.72x = 6,050,435,852.71
  5. Step 5: Solve for x
    x = 6,050,435,852.71/80,983.72
  6. Step 6: Final answer
    x = 74,711.76

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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.