Home / 81,149.68-121,624.04-45,982.72

Finding the Fourth Proportional to 81,149.68, 121,624.04 and 45,982.72

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Solution

The fourth proportional to 81,149.68, 121,624.04 and 45,982.72 is: 68,917.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,149.68 : 121,624.04 = 45,982.72 : x
  2. Step 2: Convert to fraction form
    81,149.68/121,624.04 = 45,982.72/x
  3. Step 3: Cross multiply
    81,149.68x = 121,624.04 × 45,982.72
  4. Step 4: Simplify right side
    81,149.68x = 5,592,604,176.59
  5. Step 5: Solve for x
    x = 5,592,604,176.59/81,149.68
  6. Step 6: Final answer
    x = 68,917.14

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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.