Home / 81,767.40-122,651.10-25,612.20

Finding the Fourth Proportional to 81,767.40, 122,651.10 and 25,612.20

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Solution

The fourth proportional to 81,767.40, 122,651.10 and 25,612.20 is: 38,418.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,767.40 : 122,651.10 = 25,612.20 : x
  2. Step 2: Convert to fraction form
    81,767.40/122,651.10 = 25,612.20/x
  3. Step 3: Cross multiply
    81,767.40x = 122,651.10 × 25,612.20
  4. Step 4: Simplify right side
    81,767.40x = 3,141,364,503.42
  5. Step 5: Solve for x
    x = 3,141,364,503.42/81,767.40
  6. Step 6: Final answer
    x = 38,418.30

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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.