Home / 87,342.21-120,578.09-58,811.85

Finding the Fourth Proportional to 87,342.21, 120,578.09 and 58,811.85

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Solution

The fourth proportional to 87,342.21, 120,578.09 and 58,811.85 is: 81,191.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,342.21 : 120,578.09 = 58,811.85 : x
  2. Step 2: Convert to fraction form
    87,342.21/120,578.09 = 58,811.85/x
  3. Step 3: Cross multiply
    87,342.21x = 120,578.09 × 58,811.85
  4. Step 4: Simplify right side
    87,342.21x = 7,091,420,248.31
  5. Step 5: Solve for x
    x = 7,091,420,248.31/87,342.21
  6. Step 6: Final answer
    x = 81,191.22

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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.