Home / 81,000.90-121,404.15-41,537.70

Finding the Fourth Proportional to 81,000.90, 121,404.15 and 41,537.70

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Solution

The fourth proportional to 81,000.90, 121,404.15 and 41,537.70 is: 62,256.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,000.90 : 121,404.15 = 41,537.70 : x
  2. Step 2: Convert to fraction form
    81,000.90/121,404.15 = 41,537.70/x
  3. Step 3: Cross multiply
    81,000.90x = 121,404.15 × 41,537.70
  4. Step 4: Simplify right side
    81,000.90x = 5,042,849,161.46
  5. Step 5: Solve for x
    x = 5,042,849,161.46/81,000.90
  6. Step 6: Final answer
    x = 62,256.71

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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.