Home / 81,576.15-122,400.42-31,660.11

Finding the Fourth Proportional to 81,576.15, 122,400.42 and 31,660.11

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Solution

The fourth proportional to 81,576.15, 122,400.42 and 31,660.11 is: 47,504.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,576.15 : 122,400.42 = 31,660.11 : x
  2. Step 2: Convert to fraction form
    81,576.15/122,400.42 = 31,660.11/x
  3. Step 3: Cross multiply
    81,576.15x = 122,400.42 × 31,660.11
  4. Step 4: Simplify right side
    81,576.15x = 3,875,210,761.25
  5. Step 5: Solve for x
    x = 3,875,210,761.25/81,576.15
  6. Step 6: Final answer
    x = 47,504.21

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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.