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Finding the Fourth Proportional to 66,370.62, 99,478.89 and 26,878.62

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Solution

The fourth proportional to 66,370.62, 99,478.89 and 26,878.62 is: 40,286.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,370.62 : 99,478.89 = 26,878.62 : x
  2. Step 2: Convert to fraction form
    66,370.62/99,478.89 = 26,878.62/x
  3. Step 3: Cross multiply
    66,370.62x = 99,478.89 × 26,878.62
  4. Step 4: Simplify right side
    66,370.62x = 2,673,855,282.33
  5. Step 5: Solve for x
    x = 2,673,855,282.33/66,370.62
  6. Step 6: Final answer
    x = 40,286.73

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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.