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Finding the Fourth Proportional to 77,994.45, 107,633.31 and 47,358.84

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Solution

The fourth proportional to 77,994.45, 107,633.31 and 47,358.84 is: 65,355.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,994.45 : 107,633.31 = 47,358.84 : x
  2. Step 2: Convert to fraction form
    77,994.45/107,633.31 = 47,358.84/x
  3. Step 3: Cross multiply
    77,994.45x = 107,633.31 × 47,358.84
  4. Step 4: Simplify right side
    77,994.45x = 5,097,388,706.96
  5. Step 5: Solve for x
    x = 5,097,388,706.96/77,994.45
  6. Step 6: Final answer
    x = 65,355.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.