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Finding the Fourth Proportional to 89,065.40, 133,425.30 and 49,551.80

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Solution

The fourth proportional to 89,065.40, 133,425.30 and 49,551.80 is: 74,231.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,065.40 : 133,425.30 = 49,551.80 : x
  2. Step 2: Convert to fraction form
    89,065.40/133,425.30 = 49,551.80/x
  3. Step 3: Cross multiply
    89,065.40x = 133,425.30 × 49,551.80
  4. Step 4: Simplify right side
    89,065.40x = 6,611,463,780.54
  5. Step 5: Solve for x
    x = 6,611,463,780.54/89,065.40
  6. Step 6: Final answer
    x = 74,231.56

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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.