Home / 81,420.20-122,147.72-25,259.09

Finding the Fourth Proportional to 81,420.20, 122,147.72 and 25,259.09

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Solution

The fourth proportional to 81,420.20, 122,147.72 and 25,259.09 is: 37,894.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,420.20 : 122,147.72 = 25,259.09 : x
  2. Step 2: Convert to fraction form
    81,420.20/122,147.72 = 25,259.09/x
  3. Step 3: Cross multiply
    81,420.20x = 122,147.72 × 25,259.09
  4. Step 4: Simplify right side
    81,420.20x = 3,085,340,252.77
  5. Step 5: Solve for x
    x = 3,085,340,252.77/81,420.20
  6. Step 6: Final answer
    x = 37,894.04

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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.