Home / 87,878.13-121,271.79-47,591.92

Finding the Fourth Proportional to 87,878.13, 121,271.79 and 47,591.92

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Solution

The fourth proportional to 87,878.13, 121,271.79 and 47,591.92 is: 65,676.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,878.13 : 121,271.79 = 47,591.92 : x
  2. Step 2: Convert to fraction form
    87,878.13/121,271.79 = 47,591.92/x
  3. Step 3: Cross multiply
    87,878.13x = 121,271.79 × 47,591.92
  4. Step 4: Simplify right side
    87,878.13x = 5,771,557,327.94
  5. Step 5: Solve for x
    x = 5,771,557,327.94/87,878.13
  6. Step 6: Final answer
    x = 65,676.83

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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.