Home / 81,423.12-122,142.78-25,260.96

Finding the Fourth Proportional to 81,423.12, 122,142.78 and 25,260.96

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Solution

The fourth proportional to 81,423.12, 122,142.78 and 25,260.96 is: 37,893.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,423.12 : 122,142.78 = 25,260.96 : x
  2. Step 2: Convert to fraction form
    81,423.12/122,142.78 = 25,260.96/x
  3. Step 3: Cross multiply
    81,423.12x = 122,142.78 × 25,260.96
  4. Step 4: Simplify right side
    81,423.12x = 3,085,443,879.87
  5. Step 5: Solve for x
    x = 3,085,443,879.87/81,423.12
  6. Step 6: Final answer
    x = 37,893.95

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1.5x scale

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.