Home / 81,083.34-121,687.38-52,995.78

Finding the Fourth Proportional to 81,083.34, 121,687.38 and 52,995.78

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Solution

The fourth proportional to 81,083.34, 121,687.38 and 52,995.78 is: 79,534.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,083.34 : 121,687.38 = 52,995.78 : x
  2. Step 2: Convert to fraction form
    81,083.34/121,687.38 = 52,995.78/x
  3. Step 3: Cross multiply
    81,083.34x = 121,687.38 × 52,995.78
  4. Step 4: Simplify right side
    81,083.34x = 6,448,917,619.26
  5. Step 5: Solve for x
    x = 6,448,917,619.26/81,083.34
  6. Step 6: Final answer
    x = 79,534.43

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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.