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Finding the Fourth Proportional to 63,717, 87,929.20 and 35,422.68

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Solution

The fourth proportional to 63,717, 87,929.20 and 35,422.68 is: 48,883.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,717 : 87,929.20 = 35,422.68 : x
  2. Step 2: Convert to fraction form
    63,717/87,929.20 = 35,422.68/x
  3. Step 3: Cross multiply
    63,717x = 87,929.20 × 35,422.68
  4. Step 4: Simplify right side
    63,717x = 3,114,687,914.26
  5. Step 5: Solve for x
    x = 3,114,687,914.26/63,717
  6. Step 6: Final answer
    x = 48,883.15

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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.