Home / 80,780.40-111,456.72-48,520.44

Finding the Fourth Proportional to 80,780.40, 111,456.72 and 48,520.44

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Solution

The fourth proportional to 80,780.40, 111,456.72 and 48,520.44 is: 66,946.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,780.40 : 111,456.72 = 48,520.44 : x
  2. Step 2: Convert to fraction form
    80,780.40/111,456.72 = 48,520.44/x
  3. Step 3: Cross multiply
    80,780.40x = 111,456.72 × 48,520.44
  4. Step 4: Simplify right side
    80,780.40x = 5,407,929,095.36
  5. Step 5: Solve for x
    x = 5,407,929,095.36/80,780.40
  6. Step 6: Final answer
    x = 66,946.05

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1.5x scale

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.