Home / 77,115.62-115,739.04-54,983.18

Finding the Fourth Proportional to 77,115.62, 115,739.04 and 54,983.18

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Solution

The fourth proportional to 77,115.62, 115,739.04 and 54,983.18 is: 82,521.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,115.62 : 115,739.04 = 54,983.18 : x
  2. Step 2: Convert to fraction form
    77,115.62/115,739.04 = 54,983.18/x
  3. Step 3: Cross multiply
    77,115.62x = 115,739.04 × 54,983.18
  4. Step 4: Simplify right side
    77,115.62x = 6,363,700,469.35
  5. Step 5: Solve for x
    x = 6,363,700,469.35/77,115.62
  6. Step 6: Final answer
    x = 82,521.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.