Home / 77,295.20-115,942.96-42,215.84

Finding the Fourth Proportional to 77,295.20, 115,942.96 and 42,215.84

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Solution

The fourth proportional to 77,295.20, 115,942.96 and 42,215.84 is: 63,323.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,295.20 : 115,942.96 = 42,215.84 : x
  2. Step 2: Convert to fraction form
    77,295.20/115,942.96 = 42,215.84/x
  3. Step 3: Cross multiply
    77,295.20x = 115,942.96 × 42,215.84
  4. Step 4: Simplify right side
    77,295.20x = 4,894,629,448.49
  5. Step 5: Solve for x
    x = 4,894,629,448.49/77,295.20
  6. Step 6: Final answer
    x = 63,323.85

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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.