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Finding the Fourth Proportional to 112,422.80, 168,634.20 and 29,316.80

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Solution

The fourth proportional to 112,422.80, 168,634.20 and 29,316.80 is: 43,975.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,422.80 : 168,634.20 = 29,316.80 : x
  2. Step 2: Convert to fraction form
    112,422.80/168,634.20 = 29,316.80/x
  3. Step 3: Cross multiply
    112,422.80x = 168,634.20 × 29,316.80
  4. Step 4: Simplify right side
    112,422.80x = 4,943,815,114.56
  5. Step 5: Solve for x
    x = 4,943,815,114.56/112,422.80
  6. Step 6: Final answer
    x = 43,975.20

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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.