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Finding the Fourth Proportional to 76,808.20, 115,223.10 and 24,212.20

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Solution

The fourth proportional to 76,808.20, 115,223.10 and 24,212.20 is: 36,321.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,808.20 : 115,223.10 = 24,212.20 : x
  2. Step 2: Convert to fraction form
    76,808.20/115,223.10 = 24,212.20/x
  3. Step 3: Cross multiply
    76,808.20x = 115,223.10 × 24,212.20
  4. Step 4: Simplify right side
    76,808.20x = 2,789,804,741.82
  5. Step 5: Solve for x
    x = 2,789,804,741.82/76,808.20
  6. Step 6: Final answer
    x = 36,321.70

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1.5x scale

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.