Home / 87,721.66-121,056.61-48,431.90

Finding the Fourth Proportional to 87,721.66, 121,056.61 and 48,431.90

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Solution

The fourth proportional to 87,721.66, 121,056.61 and 48,431.90 is: 66,836.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,721.66 : 121,056.61 = 48,431.90 : x
  2. Step 2: Convert to fraction form
    87,721.66/121,056.61 = 48,431.90/x
  3. Step 3: Cross multiply
    87,721.66x = 121,056.61 × 48,431.90
  4. Step 4: Simplify right side
    87,721.66x = 5,863,001,629.86
  5. Step 5: Solve for x
    x = 5,863,001,629.86/87,721.66
  6. Step 6: Final answer
    x = 66,836.42

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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.