Home / 80,308.71-120,465.05-27,001.49

Finding the Fourth Proportional to 80,308.71, 120,465.05 and 27,001.49

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Solution

The fourth proportional to 80,308.71, 120,465.05 and 27,001.49 is: 40,502.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,308.71 : 120,465.05 = 27,001.49 : x
  2. Step 2: Convert to fraction form
    80,308.71/120,465.05 = 27,001.49/x
  3. Step 3: Cross multiply
    80,308.71x = 120,465.05 × 27,001.49
  4. Step 4: Simplify right side
    80,308.71x = 3,252,735,105.59
  5. Step 5: Solve for x
    x = 3,252,735,105.59/80,308.71
  6. Step 6: Final answer
    x = 40,502.89

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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.