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Finding the Fourth Proportional to 74,474.19, 111,790.88 and 30,129.93

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Solution

The fourth proportional to 74,474.19, 111,790.88 and 30,129.93 is: 45,227.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,474.19 : 111,790.88 = 30,129.93 : x
  2. Step 2: Convert to fraction form
    74,474.19/111,790.88 = 30,129.93/x
  3. Step 3: Cross multiply
    74,474.19x = 111,790.88 × 30,129.93
  4. Step 4: Simplify right side
    74,474.19x = 3,368,251,238.39
  5. Step 5: Solve for x
    x = 3,368,251,238.39/74,474.19
  6. Step 6: Final answer
    x = 45,227.09

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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.