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Finding the Fourth Proportional to 76,853.90, 115,280.85 and 41,861.90

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Solution

The fourth proportional to 76,853.90, 115,280.85 and 41,861.90 is: 62,792.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,853.90 : 115,280.85 = 41,861.90 : x
  2. Step 2: Convert to fraction form
    76,853.90/115,280.85 = 41,861.90/x
  3. Step 3: Cross multiply
    76,853.90x = 115,280.85 × 41,861.90
  4. Step 4: Simplify right side
    76,853.90x = 4,825,875,414.62
  5. Step 5: Solve for x
    x = 4,825,875,414.62/76,853.90
  6. Step 6: Final answer
    x = 62,792.85

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1.5x scale

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.