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Finding the Fourth Proportional to 63,579.33, 87,756.62 and 39,691.62

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Solution

The fourth proportional to 63,579.33, 87,756.62 and 39,691.62 is: 54,785.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,579.33 : 87,756.62 = 39,691.62 : x
  2. Step 2: Convert to fraction form
    63,579.33/87,756.62 = 39,691.62/x
  3. Step 3: Cross multiply
    63,579.33x = 87,756.62 × 39,691.62
  4. Step 4: Simplify right side
    63,579.33x = 3,483,202,215.07
  5. Step 5: Solve for x
    x = 3,483,202,215.07/63,579.33
  6. Step 6: Final answer
    x = 54,785.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.