Home / 81,885.32-122,829.50-25,724.37

Finding the Fourth Proportional to 81,885.32, 122,829.50 and 25,724.37

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Solution

The fourth proportional to 81,885.32, 122,829.50 and 25,724.37 is: 38,587.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,885.32 : 122,829.50 = 25,724.37 : x
  2. Step 2: Convert to fraction form
    81,885.32/122,829.50 = 25,724.37/x
  3. Step 3: Cross multiply
    81,885.32x = 122,829.50 × 25,724.37
  4. Step 4: Simplify right side
    81,885.32x = 3,159,711,504.92
  5. Step 5: Solve for x
    x = 3,159,711,504.92/81,885.32
  6. Step 6: Final answer
    x = 38,587.03

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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.