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Finding the Fourth Proportional to 76,777.88, 115,181.94 and 26,872.16

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Solution

The fourth proportional to 76,777.88, 115,181.94 and 26,872.16 is: 40,313.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,777.88 : 115,181.94 = 26,872.16 : x
  2. Step 2: Convert to fraction form
    76,777.88/115,181.94 = 26,872.16/x
  3. Step 3: Cross multiply
    76,777.88x = 115,181.94 × 26,872.16
  4. Step 4: Simplify right side
    76,777.88x = 3,095,187,520.79
  5. Step 5: Solve for x
    x = 3,095,187,520.79/76,777.88
  6. Step 6: Final answer
    x = 40,313.53

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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.