Home / 80,546.76-111,115.96-56,686.68

Finding the Fourth Proportional to 80,546.76, 111,115.96 and 56,686.68

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Solution

The fourth proportional to 80,546.76, 111,115.96 and 56,686.68 is: 78,200.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,546.76 : 111,115.96 = 56,686.68 : x
  2. Step 2: Convert to fraction form
    80,546.76/111,115.96 = 56,686.68/x
  3. Step 3: Cross multiply
    80,546.76x = 111,115.96 × 56,686.68
  4. Step 4: Simplify right side
    80,546.76x = 6,298,794,867.41
  5. Step 5: Solve for x
    x = 6,298,794,867.41/80,546.76
  6. Step 6: Final answer
    x = 78,200.47

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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.