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Finding the Fourth Proportional to 85,377.75, 117,829.65 and 49,565.62

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Solution

The fourth proportional to 85,377.75, 117,829.65 and 49,565.62 is: 68,405.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,377.75 : 117,829.65 = 49,565.62 : x
  2. Step 2: Convert to fraction form
    85,377.75/117,829.65 = 49,565.62/x
  3. Step 3: Cross multiply
    85,377.75x = 117,829.65 × 49,565.62
  4. Step 4: Simplify right side
    85,377.75x = 5,840,299,989.79
  5. Step 5: Solve for x
    x = 5,840,299,989.79/85,377.75
  6. Step 6: Final answer
    x = 68,405.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.