Home / 81,024.56-121,694.40-66,042.68

Finding the Fourth Proportional to 81,024.56, 121,694.40 and 66,042.68

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Solution

The fourth proportional to 81,024.56, 121,694.40 and 66,042.68 is: 99,192.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,024.56 : 121,694.40 = 66,042.68 : x
  2. Step 2: Convert to fraction form
    81,024.56/121,694.40 = 66,042.68/x
  3. Step 3: Cross multiply
    81,024.56x = 121,694.40 × 66,042.68
  4. Step 4: Simplify right side
    81,024.56x = 8,037,024,164.87
  5. Step 5: Solve for x
    x = 8,037,024,164.87/81,024.56
  6. Step 6: Final answer
    x = 99,192.44

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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.