Home / 81,824.20-122,736.30-26,420.20

Finding the Fourth Proportional to 81,824.20, 122,736.30 and 26,420.20

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Solution

The fourth proportional to 81,824.20, 122,736.30 and 26,420.20 is: 39,630.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,824.20 : 122,736.30 = 26,420.20 : x
  2. Step 2: Convert to fraction form
    81,824.20/122,736.30 = 26,420.20/x
  3. Step 3: Cross multiply
    81,824.20x = 122,736.30 × 26,420.20
  4. Step 4: Simplify right side
    81,824.20x = 3,242,717,593.26
  5. Step 5: Solve for x
    x = 3,242,717,593.26/81,824.20
  6. Step 6: Final answer
    x = 39,630.30

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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.