Home / 40,770.88-61,155.78-11,188.70

Finding the Fourth Proportional to 40,770.88, 61,155.78 and 11,188.70

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Solution

The fourth proportional to 40,770.88, 61,155.78 and 11,188.70 is: 16,782.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,770.88 : 61,155.78 = 11,188.70 : x
  2. Step 2: Convert to fraction form
    40,770.88/61,155.78 = 11,188.70/x
  3. Step 3: Cross multiply
    40,770.88x = 61,155.78 × 11,188.70
  4. Step 4: Simplify right side
    40,770.88x = 684,253,675.69
  5. Step 5: Solve for x
    x = 684,253,675.69/40,770.88
  6. Step 6: Final answer
    x = 16,782.90

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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.