Home / 81,576.40-122,409.18-31,658.48

Finding the Fourth Proportional to 81,576.40, 122,409.18 and 31,658.48

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Solution

The fourth proportional to 81,576.40, 122,409.18 and 31,658.48 is: 47,505.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,576.40 : 122,409.18 = 31,658.48 : x
  2. Step 2: Convert to fraction form
    81,576.40/122,409.18 = 31,658.48/x
  3. Step 3: Cross multiply
    81,576.40x = 122,409.18 × 31,658.48
  4. Step 4: Simplify right side
    81,576.40x = 3,875,288,576.85
  5. Step 5: Solve for x
    x = 3,875,288,576.85/81,576.40
  6. Step 6: Final answer
    x = 47,505.02

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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.