Home / 91,205.20-125,863.08-55,385.68

Finding the Fourth Proportional to 91,205.20, 125,863.08 and 55,385.68

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Solution

The fourth proportional to 91,205.20, 125,863.08 and 55,385.68 is: 76,432.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,205.20 : 125,863.08 = 55,385.68 : x
  2. Step 2: Convert to fraction form
    91,205.20/125,863.08 = 55,385.68/x
  3. Step 3: Cross multiply
    91,205.20x = 125,863.08 × 55,385.68
  4. Step 4: Simplify right side
    91,205.20x = 6,971,012,272.69
  5. Step 5: Solve for x
    x = 6,971,012,272.69/91,205.20
  6. Step 6: Final answer
    x = 76,432.18

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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.