Home / 87,218.06-120,359.39-48,977.91

Finding the Fourth Proportional to 87,218.06, 120,359.39 and 48,977.91

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Solution

The fourth proportional to 87,218.06, 120,359.39 and 48,977.91 is: 67,588.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,218.06 : 120,359.39 = 48,977.91 : x
  2. Step 2: Convert to fraction form
    87,218.06/120,359.39 = 48,977.91/x
  3. Step 3: Cross multiply
    87,218.06x = 120,359.39 × 48,977.91
  4. Step 4: Simplify right side
    87,218.06x = 5,894,951,126.19
  5. Step 5: Solve for x
    x = 5,894,951,126.19/87,218.06
  6. Step 6: Final answer
    x = 67,588.66

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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.