Home / 80,914.59-111,664.05-45,103.68

Finding the Fourth Proportional to 80,914.59, 111,664.05 and 45,103.68

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Solution

The fourth proportional to 80,914.59, 111,664.05 and 45,103.68 is: 62,244.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,914.59 : 111,664.05 = 45,103.68 : x
  2. Step 2: Convert to fraction form
    80,914.59/111,664.05 = 45,103.68/x
  3. Step 3: Cross multiply
    80,914.59x = 111,664.05 × 45,103.68
  4. Step 4: Simplify right side
    80,914.59x = 5,036,459,578.70
  5. Step 5: Solve for x
    x = 5,036,459,578.70/80,914.59
  6. Step 6: Final answer
    x = 62,244.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.