Home / 80,987.25-111,764.78-45,176.50

Finding the Fourth Proportional to 80,987.25, 111,764.78 and 45,176.50

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Solution

The fourth proportional to 80,987.25, 111,764.78 and 45,176.50 is: 62,344.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,987.25 : 111,764.78 = 45,176.50 : x
  2. Step 2: Convert to fraction form
    80,987.25/111,764.78 = 45,176.50/x
  3. Step 3: Cross multiply
    80,987.25x = 111,764.78 × 45,176.50
  4. Step 4: Simplify right side
    80,987.25x = 5,049,141,583.67
  5. Step 5: Solve for x
    x = 5,049,141,583.67/80,987.25
  6. Step 6: Final answer
    x = 62,344.89

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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.