Home / 71,821.20-107,688.60-36,829.20

Finding the Fourth Proportional to 71,821.20, 107,688.60 and 36,829.20

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Solution

The fourth proportional to 71,821.20, 107,688.60 and 36,829.20 is: 55,221.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,821.20 : 107,688.60 = 36,829.20 : x
  2. Step 2: Convert to fraction form
    71,821.20/107,688.60 = 36,829.20/x
  3. Step 3: Cross multiply
    71,821.20x = 107,688.60 × 36,829.20
  4. Step 4: Simplify right side
    71,821.20x = 3,966,084,987.12
  5. Step 5: Solve for x
    x = 3,966,084,987.12/71,821.20
  6. Step 6: Final answer
    x = 55,221.65

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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.