Home / 83,722.36-115,470.04-55,071.45

Finding the Fourth Proportional to 83,722.36, 115,470.04 and 55,071.45

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Solution

The fourth proportional to 83,722.36, 115,470.04 and 55,071.45 is: 75,954.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,722.36 : 115,470.04 = 55,071.45 : x
  2. Step 2: Convert to fraction form
    83,722.36/115,470.04 = 55,071.45/x
  3. Step 3: Cross multiply
    83,722.36x = 115,470.04 × 55,071.45
  4. Step 4: Simplify right side
    83,722.36x = 6,359,101,819.33
  5. Step 5: Solve for x
    x = 6,359,101,819.33/83,722.36
  6. Step 6: Final answer
    x = 75,954.64

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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.