Home / 80,988.62-111,764.46-45,177.72

Finding the Fourth Proportional to 80,988.62, 111,764.46 and 45,177.72

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Solution

The fourth proportional to 80,988.62, 111,764.46 and 45,177.72 is: 62,345.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,988.62 : 111,764.46 = 45,177.72 : x
  2. Step 2: Convert to fraction form
    80,988.62/111,764.46 = 45,177.72/x
  3. Step 3: Cross multiply
    80,988.62x = 111,764.46 × 45,177.72
  4. Step 4: Simplify right side
    80,988.62x = 5,049,263,479.83
  5. Step 5: Solve for x
    x = 5,049,263,479.83/80,988.62
  6. Step 6: Final answer
    x = 62,345.35

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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.