Home / 80,657.48-111,217.30-55,167.96

Finding the Fourth Proportional to 80,657.48, 111,217.30 and 55,167.96

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Solution

The fourth proportional to 80,657.48, 111,217.30 and 55,167.96 is: 76,070.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,657.48 : 111,217.30 = 55,167.96 : x
  2. Step 2: Convert to fraction form
    80,657.48/111,217.30 = 55,167.96/x
  3. Step 3: Cross multiply
    80,657.48x = 111,217.30 × 55,167.96
  4. Step 4: Simplify right side
    80,657.48x = 6,135,631,557.71
  5. Step 5: Solve for x
    x = 6,135,631,557.71/80,657.48
  6. Step 6: Final answer
    x = 76,070.21

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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.