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Finding the Fourth Proportional to 89,133.60, 133,657.20 and 49,648.80

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Solution

The fourth proportional to 89,133.60, 133,657.20 and 49,648.80 is: 74,449.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,133.60 : 133,657.20 = 49,648.80 : x
  2. Step 2: Convert to fraction form
    89,133.60/133,657.20 = 49,648.80/x
  3. Step 3: Cross multiply
    89,133.60x = 133,657.20 × 49,648.80
  4. Step 4: Simplify right side
    89,133.60x = 6,635,919,591.36
  5. Step 5: Solve for x
    x = 6,635,919,591.36/89,133.60
  6. Step 6: Final answer
    x = 74,449.14

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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.