Home / 81,305.80-121,659.36-49,170.28

Finding the Fourth Proportional to 81,305.80, 121,659.36 and 49,170.28

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Solution

The fourth proportional to 81,305.80, 121,659.36 and 49,170.28 is: 73,574.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,305.80 : 121,659.36 = 49,170.28 : x
  2. Step 2: Convert to fraction form
    81,305.80/121,659.36 = 49,170.28/x
  3. Step 3: Cross multiply
    81,305.80x = 121,659.36 × 49,170.28
  4. Step 4: Simplify right side
    81,305.80x = 5,982,024,795.82
  5. Step 5: Solve for x
    x = 5,982,024,795.82/81,305.80
  6. Step 6: Final answer
    x = 73,574.39

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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.