Home / 88,389.88-121,975.69-48,102.78

Finding the Fourth Proportional to 88,389.88, 121,975.69 and 48,102.78

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Solution

The fourth proportional to 88,389.88, 121,975.69 and 48,102.78 is: 66,380.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,389.88 : 121,975.69 = 48,102.78 : x
  2. Step 2: Convert to fraction form
    88,389.88/121,975.69 = 48,102.78/x
  3. Step 3: Cross multiply
    88,389.88x = 121,975.69 × 48,102.78
  4. Step 4: Simplify right side
    88,389.88x = 5,867,369,725.58
  5. Step 5: Solve for x
    x = 5,867,369,725.58/88,389.88
  6. Step 6: Final answer
    x = 66,380.56

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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.