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Finding the Fourth Proportional to 75,311.24, 112,928.24 and 39,791.66

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Solution

The fourth proportional to 75,311.24, 112,928.24 and 39,791.66 is: 59,667.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,311.24 : 112,928.24 = 39,791.66 : x
  2. Step 2: Convert to fraction form
    75,311.24/112,928.24 = 39,791.66/x
  3. Step 3: Cross multiply
    75,311.24x = 112,928.24 × 39,791.66
  4. Step 4: Simplify right side
    75,311.24x = 4,493,601,665.32
  5. Step 5: Solve for x
    x = 4,493,601,665.32/75,311.24
  6. Step 6: Final answer
    x = 59,667.08

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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.