Home / 80,279.48-120,379.53-47,007.92

Finding the Fourth Proportional to 80,279.48, 120,379.53 and 47,007.92

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Solution

The fourth proportional to 80,279.48, 120,379.53 and 47,007.92 is: 70,488.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,279.48 : 120,379.53 = 47,007.92 : x
  2. Step 2: Convert to fraction form
    80,279.48/120,379.53 = 47,007.92/x
  3. Step 3: Cross multiply
    80,279.48x = 120,379.53 × 47,007.92
  4. Step 4: Simplify right side
    80,279.48x = 5,658,791,315.88
  5. Step 5: Solve for x
    x = 5,658,791,315.88/80,279.48
  6. Step 6: Final answer
    x = 70,488.64

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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.