Home / 86,839.29-119,851.11-55,011.15

Finding the Fourth Proportional to 86,839.29, 119,851.11 and 55,011.15

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Solution

The fourth proportional to 86,839.29, 119,851.11 and 55,011.15 is: 75,923.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,839.29 : 119,851.11 = 55,011.15 : x
  2. Step 2: Convert to fraction form
    86,839.29/119,851.11 = 55,011.15/x
  3. Step 3: Cross multiply
    86,839.29x = 119,851.11 × 55,011.15
  4. Step 4: Simplify right side
    86,839.29x = 6,593,147,389.88
  5. Step 5: Solve for x
    x = 6,593,147,389.88/86,839.29
  6. Step 6: Final answer
    x = 75,923.55

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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.