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Finding the Fourth Proportional to 118,377.60, 177,575.66 and 39,491.78

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Solution

The fourth proportional to 118,377.60, 177,575.66 and 39,491.78 is: 59,240.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,377.60 : 177,575.66 = 39,491.78 : x
  2. Step 2: Convert to fraction form
    118,377.60/177,575.66 = 39,491.78/x
  3. Step 3: Cross multiply
    118,377.60x = 177,575.66 × 39,491.78
  4. Step 4: Simplify right side
    118,377.60x = 7,012,777,812.74
  5. Step 5: Solve for x
    x = 7,012,777,812.74/118,377.60
  6. Step 6: Final answer
    x = 59,240.75

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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.