Home / 85,819.80-128,766.15-41,423.70

Finding the Fourth Proportional to 85,819.80, 128,766.15 and 41,423.70

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Solution

The fourth proportional to 85,819.80, 128,766.15 and 41,423.70 is: 62,153.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,819.80 : 128,766.15 = 41,423.70 : x
  2. Step 2: Convert to fraction form
    85,819.80/128,766.15 = 41,423.70/x
  3. Step 3: Cross multiply
    85,819.80x = 128,766.15 × 41,423.70
  4. Step 4: Simplify right side
    85,819.80x = 5,333,970,367.76
  5. Step 5: Solve for x
    x = 5,333,970,367.76/85,819.80
  6. Step 6: Final answer
    x = 62,153.14

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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.