Home / 83,836.65-115,615.47-55,105.56

Finding the Fourth Proportional to 83,836.65, 115,615.47 and 55,105.56

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Solution

The fourth proportional to 83,836.65, 115,615.47 and 55,105.56 is: 75,993.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,836.65 : 115,615.47 = 55,105.56 : x
  2. Step 2: Convert to fraction form
    83,836.65/115,615.47 = 55,105.56/x
  3. Step 3: Cross multiply
    83,836.65x = 115,615.47 × 55,105.56
  4. Step 4: Simplify right side
    83,836.65x = 6,371,055,219.01
  5. Step 5: Solve for x
    x = 6,371,055,219.01/83,836.65
  6. Step 6: Final answer
    x = 75,993.68

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1.5x scale

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.