Home / 76,778.16-115,176.96-30,024.96

Finding the Fourth Proportional to 76,778.16, 115,176.96 and 30,024.96

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Solution

The fourth proportional to 76,778.16, 115,176.96 and 30,024.96 is: 45,041.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,778.16 : 115,176.96 = 30,024.96 : x
  2. Step 2: Convert to fraction form
    76,778.16/115,176.96 = 30,024.96/x
  3. Step 3: Cross multiply
    76,778.16x = 115,176.96 × 30,024.96
  4. Step 4: Simplify right side
    76,778.16x = 3,458,183,616.92
  5. Step 5: Solve for x
    x = 3,458,183,616.92/76,778.16
  6. Step 6: Final answer
    x = 45,041.24

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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.