Home / 81,530.88-122,280.67-25,371.69

Finding the Fourth Proportional to 81,530.88, 122,280.67 and 25,371.69

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Solution

The fourth proportional to 81,530.88, 122,280.67 and 25,371.69 is: 38,052.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,530.88 : 122,280.67 = 25,371.69 : x
  2. Step 2: Convert to fraction form
    81,530.88/122,280.67 = 25,371.69/x
  3. Step 3: Cross multiply
    81,530.88x = 122,280.67 × 25,371.69
  4. Step 4: Simplify right side
    81,530.88x = 3,102,467,252.23
  5. Step 5: Solve for x
    x = 3,102,467,252.23/81,530.88
  6. Step 6: Final answer
    x = 38,052.66

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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.