Home / 72,116.82-108,175.32-18,808.74

Finding the Fourth Proportional to 72,116.82, 108,175.32 and 18,808.74

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Solution

The fourth proportional to 72,116.82, 108,175.32 and 18,808.74 is: 28,213.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,116.82 : 108,175.32 = 18,808.74 : x
  2. Step 2: Convert to fraction form
    72,116.82/108,175.32 = 18,808.74/x
  3. Step 3: Cross multiply
    72,116.82x = 108,175.32 × 18,808.74
  4. Step 4: Simplify right side
    72,116.82x = 2,034,641,468.30
  5. Step 5: Solve for x
    x = 2,034,641,468.30/72,116.82
  6. Step 6: Final answer
    x = 28,213.13

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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.