Home / 81,520.40-122,298.20-25,359.44

Finding the Fourth Proportional to 81,520.40, 122,298.20 and 25,359.44

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Solution

The fourth proportional to 81,520.40, 122,298.20 and 25,359.44 is: 38,044.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,520.40 : 122,298.20 = 25,359.44 : x
  2. Step 2: Convert to fraction form
    81,520.40/122,298.20 = 25,359.44/x
  3. Step 3: Cross multiply
    81,520.40x = 122,298.20 × 25,359.44
  4. Step 4: Simplify right side
    81,520.40x = 3,101,413,865.01
  5. Step 5: Solve for x
    x = 3,101,413,865.01/81,520.40
  6. Step 6: Final answer
    x = 38,044.64

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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.