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Finding the Fourth Proportional to 77,304.87, 115,920.63 and 29,942.15

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Solution

The fourth proportional to 77,304.87, 115,920.63 and 29,942.15 is: 44,899.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,304.87 : 115,920.63 = 29,942.15 : x
  2. Step 2: Convert to fraction form
    77,304.87/115,920.63 = 29,942.15/x
  3. Step 3: Cross multiply
    77,304.87x = 115,920.63 × 29,942.15
  4. Step 4: Simplify right side
    77,304.87x = 3,470,912,311.95
  5. Step 5: Solve for x
    x = 3,470,912,311.95/77,304.87
  6. Step 6: Final answer
    x = 44,899.01

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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.