Home / 76,778.11-115,139.62-29,406.52

Finding the Fourth Proportional to 76,778.11, 115,139.62 and 29,406.52

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Solution

The fourth proportional to 76,778.11, 115,139.62 and 29,406.52 is: 44,099.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,778.11 : 115,139.62 = 29,406.52 : x
  2. Step 2: Convert to fraction form
    76,778.11/115,139.62 = 29,406.52/x
  3. Step 3: Cross multiply
    76,778.11x = 115,139.62 × 29,406.52
  4. Step 4: Simplify right side
    76,778.11x = 3,385,855,538.32
  5. Step 5: Solve for x
    x = 3,385,855,538.32/76,778.11
  6. Step 6: Final answer
    x = 44,099.23

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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.