Home / 87,695.12-121,019.08-49,969.36

Finding the Fourth Proportional to 87,695.12, 121,019.08 and 49,969.36

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Solution

The fourth proportional to 87,695.12, 121,019.08 and 49,969.36 is: 68,957.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,695.12 : 121,019.08 = 49,969.36 : x
  2. Step 2: Convert to fraction form
    87,695.12/121,019.08 = 49,969.36/x
  3. Step 3: Cross multiply
    87,695.12x = 121,019.08 × 49,969.36
  4. Step 4: Simplify right side
    87,695.12x = 6,047,245,975.39
  5. Step 5: Solve for x
    x = 6,047,245,975.39/87,695.12
  6. Step 6: Final answer
    x = 68,957.61

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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.