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Finding the Fourth Proportional to 75,112.56, 112,730.39 and 30,739.70

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Solution

The fourth proportional to 75,112.56, 112,730.39 and 30,739.70 is: 46,134.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,112.56 : 112,730.39 = 30,739.70 : x
  2. Step 2: Convert to fraction form
    75,112.56/112,730.39 = 30,739.70/x
  3. Step 3: Cross multiply
    75,112.56x = 112,730.39 × 30,739.70
  4. Step 4: Simplify right side
    75,112.56x = 3,465,297,652.13
  5. Step 5: Solve for x
    x = 3,465,297,652.13/75,112.56
  6. Step 6: Final answer
    x = 46,134.73

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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.