Home / 87,694.12-121,017.70-49,968.36

Finding the Fourth Proportional to 87,694.12, 121,017.70 and 49,968.36

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Solution

The fourth proportional to 87,694.12, 121,017.70 and 49,968.36 is: 68,956.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,694.12 : 121,017.70 = 49,968.36 : x
  2. Step 2: Convert to fraction form
    87,694.12/121,017.70 = 49,968.36/x
  3. Step 3: Cross multiply
    87,694.12x = 121,017.70 × 49,968.36
  4. Step 4: Simplify right side
    87,694.12x = 6,047,055,999.97
  5. Step 5: Solve for x
    x = 6,047,055,999.97/87,694.12
  6. Step 6: Final answer
    x = 68,956.23

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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.