Home / 76,844.86-115,267.30-20,685.10

Finding the Fourth Proportional to 76,844.86, 115,267.30 and 20,685.10

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Solution

The fourth proportional to 76,844.86, 115,267.30 and 20,685.10 is: 31,027.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,844.86 : 115,267.30 = 20,685.10 : x
  2. Step 2: Convert to fraction form
    76,844.86/115,267.30 = 20,685.10/x
  3. Step 3: Cross multiply
    76,844.86x = 115,267.30 × 20,685.10
  4. Step 4: Simplify right side
    76,844.86x = 2,384,315,627.23
  5. Step 5: Solve for x
    x = 2,384,315,627.23/76,844.86
  6. Step 6: Final answer
    x = 31,027.65

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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.