Home / 81,621.48-122,417.88-22,442.88

Finding the Fourth Proportional to 81,621.48, 122,417.88 and 22,442.88

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Solution

The fourth proportional to 81,621.48, 122,417.88 and 22,442.88 is: 33,660.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,621.48 : 122,417.88 = 22,442.88 : x
  2. Step 2: Convert to fraction form
    81,621.48/122,417.88 = 22,442.88/x
  3. Step 3: Cross multiply
    81,621.48x = 122,417.88 × 22,442.88
  4. Step 4: Simplify right side
    81,621.48x = 2,747,409,790.69
  5. Step 5: Solve for x
    x = 2,747,409,790.69/81,621.48
  6. Step 6: Final answer
    x = 33,660.38

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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.