Home / 87,779.87-121,195.59-57,616.46

Finding the Fourth Proportional to 87,779.87, 121,195.59 and 57,616.46

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Solution

The fourth proportional to 87,779.87, 121,195.59 and 57,616.46 is: 79,549.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,779.87 : 121,195.59 = 57,616.46 : x
  2. Step 2: Convert to fraction form
    87,779.87/121,195.59 = 57,616.46/x
  3. Step 3: Cross multiply
    87,779.87x = 121,195.59 × 57,616.46
  4. Step 4: Simplify right side
    87,779.87x = 6,982,860,863.41
  5. Step 5: Solve for x
    x = 6,982,860,863.41/87,779.87
  6. Step 6: Final answer
    x = 79,549.68

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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.