Home / 81,169.20-121,763.52-34,416

Finding the Fourth Proportional to 81,169.20, 121,763.52 and 34,416

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Solution

The fourth proportional to 81,169.20, 121,763.52 and 34,416 is: 51,628.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,169.20 : 121,763.52 = 34,416 : x
  2. Step 2: Convert to fraction form
    81,169.20/121,763.52 = 34,416/x
  3. Step 3: Cross multiply
    81,169.20x = 121,763.52 × 34,416
  4. Step 4: Simplify right side
    81,169.20x = 4,190,613,304.32
  5. Step 5: Solve for x
    x = 4,190,613,304.32/81,169.20
  6. Step 6: Final answer
    x = 51,628.12

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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.