Home / 81,850.15-122,766.90-25,690.69

Finding the Fourth Proportional to 81,850.15, 122,766.90 and 25,690.69

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Solution

The fourth proportional to 81,850.15, 122,766.90 and 25,690.69 is: 38,533.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,850.15 : 122,766.90 = 25,690.69 : x
  2. Step 2: Convert to fraction form
    81,850.15/122,766.90 = 25,690.69/x
  3. Step 3: Cross multiply
    81,850.15x = 122,766.90 × 25,690.69
  4. Step 4: Simplify right side
    81,850.15x = 3,153,966,370.16
  5. Step 5: Solve for x
    x = 3,153,966,370.16/81,850.15
  6. Step 6: Final answer
    x = 38,533.42

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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.