Home / 80,977.81-121,487.22-57,331.69

Finding the Fourth Proportional to 80,977.81, 121,487.22 and 57,331.69

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Solution

The fourth proportional to 80,977.81, 121,487.22 and 57,331.69 is: 86,012.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,977.81 : 121,487.22 = 57,331.69 : x
  2. Step 2: Convert to fraction form
    80,977.81/121,487.22 = 57,331.69/x
  3. Step 3: Cross multiply
    80,977.81x = 121,487.22 × 57,331.69
  4. Step 4: Simplify right side
    80,977.81x = 6,965,067,636.00
  5. Step 5: Solve for x
    x = 6,965,067,636.00/80,977.81
  6. Step 6: Final answer
    x = 86,012.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.