Home / 87,780.37-121,196.28-57,616.96

Finding the Fourth Proportional to 87,780.37, 121,196.28 and 57,616.96

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Solution

The fourth proportional to 87,780.37, 121,196.28 and 57,616.96 is: 79,550.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,780.37 : 121,196.28 = 57,616.96 : x
  2. Step 2: Convert to fraction form
    87,780.37/121,196.28 = 57,616.96/x
  3. Step 3: Cross multiply
    87,780.37x = 121,196.28 × 57,616.96
  4. Step 4: Simplify right side
    87,780.37x = 6,982,961,216.91
  5. Step 5: Solve for x
    x = 6,982,961,216.91/87,780.37
  6. Step 6: Final answer
    x = 79,550.37

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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.