Home / 66,909.31-100,380.57-26,930.95

Finding the Fourth Proportional to 66,909.31, 100,380.57 and 26,930.95

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Solution

The fourth proportional to 66,909.31, 100,380.57 and 26,930.95 is: 40,403.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,909.31 : 100,380.57 = 26,930.95 : x
  2. Step 2: Convert to fraction form
    66,909.31/100,380.57 = 26,930.95/x
  3. Step 3: Cross multiply
    66,909.31x = 100,380.57 × 26,930.95
  4. Step 4: Simplify right side
    66,909.31x = 2,703,344,111.64
  5. Step 5: Solve for x
    x = 2,703,344,111.64/66,909.31
  6. Step 6: Final answer
    x = 40,403.11

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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.