Home / 83,386.15-115,072.03-45,144.68

Finding the Fourth Proportional to 83,386.15, 115,072.03 and 45,144.68

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Solution

The fourth proportional to 83,386.15, 115,072.03 and 45,144.68 is: 62,299.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,386.15 : 115,072.03 = 45,144.68 : x
  2. Step 2: Convert to fraction form
    83,386.15/115,072.03 = 45,144.68/x
  3. Step 3: Cross multiply
    83,386.15x = 115,072.03 × 45,144.68
  4. Step 4: Simplify right side
    83,386.15x = 5,194,890,099.65
  5. Step 5: Solve for x
    x = 5,194,890,099.65/83,386.15
  6. Step 6: Final answer
    x = 62,299.20

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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.