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Finding the Fourth Proportional to 76,776.56, 115,164.72 and 29,996.66

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Solution

The fourth proportional to 76,776.56, 115,164.72 and 29,996.66 is: 44,994.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,776.56 : 115,164.72 = 29,996.66 : x
  2. Step 2: Convert to fraction form
    76,776.56/115,164.72 = 29,996.66/x
  3. Step 3: Cross multiply
    76,776.56x = 115,164.72 × 29,996.66
  4. Step 4: Simplify right side
    76,776.56x = 3,454,556,949.84
  5. Step 5: Solve for x
    x = 3,454,556,949.84/76,776.56
  6. Step 6: Final answer
    x = 44,994.94

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Similar ratio
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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.