Home / 76,949.10-115,399.65-30,216.30

Finding the Fourth Proportional to 76,949.10, 115,399.65 and 30,216.30

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Solution

The fourth proportional to 76,949.10, 115,399.65 and 30,216.30 is: 45,315.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,949.10 : 115,399.65 = 30,216.30 : x
  2. Step 2: Convert to fraction form
    76,949.10/115,399.65 = 30,216.30/x
  3. Step 3: Cross multiply
    76,949.10x = 115,399.65 × 30,216.30
  4. Step 4: Simplify right side
    76,949.10x = 3,486,950,444.30
  5. Step 5: Solve for x
    x = 3,486,950,444.30/76,949.10
  6. Step 6: Final answer
    x = 45,315.03

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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.