Home / 81,161.28-121,754.99-25,001.37

Finding the Fourth Proportional to 81,161.28, 121,754.99 and 25,001.37

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Solution

The fourth proportional to 81,161.28, 121,754.99 and 25,001.37 is: 37,506.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,161.28 : 121,754.99 = 25,001.37 : x
  2. Step 2: Convert to fraction form
    81,161.28/121,754.99 = 25,001.37/x
  3. Step 3: Cross multiply
    81,161.28x = 121,754.99 × 25,001.37
  4. Step 4: Simplify right side
    81,161.28x = 3,044,041,616.84
  5. Step 5: Solve for x
    x = 3,044,041,616.84/81,161.28
  6. Step 6: Final answer
    x = 37,506.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.