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Finding the Fourth Proportional to 74,791.20, 112,208.06 and 30,449.77

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Solution

The fourth proportional to 74,791.20, 112,208.06 and 30,449.77 is: 45,683.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,791.20 : 112,208.06 = 30,449.77 : x
  2. Step 2: Convert to fraction form
    74,791.20/112,208.06 = 30,449.77/x
  3. Step 3: Cross multiply
    74,791.20x = 112,208.06 × 30,449.77
  4. Step 4: Simplify right side
    74,791.20x = 3,416,709,619.15
  5. Step 5: Solve for x
    x = 3,416,709,619.15/74,791.20
  6. Step 6: Final answer
    x = 45,683.31

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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.