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Finding the Fourth Proportional to 89,578.68, 134,338.59 and 39,657.75

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Solution

The fourth proportional to 89,578.68, 134,338.59 and 39,657.75 is: 59,473.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,578.68 : 134,338.59 = 39,657.75 : x
  2. Step 2: Convert to fraction form
    89,578.68/134,338.59 = 39,657.75/x
  3. Step 3: Cross multiply
    89,578.68x = 134,338.59 × 39,657.75
  4. Step 4: Simplify right side
    89,578.68x = 5,327,566,217.57
  5. Step 5: Solve for x
    x = 5,327,566,217.57/89,578.68
  6. Step 6: Final answer
    x = 59,473.60

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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.