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Finding the Fourth Proportional to 74,438.55, 111,661.34 and 21,843.63

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Solution

The fourth proportional to 74,438.55, 111,661.34 and 21,843.63 is: 32,766.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,438.55 : 111,661.34 = 21,843.63 : x
  2. Step 2: Convert to fraction form
    74,438.55/111,661.34 = 21,843.63/x
  3. Step 3: Cross multiply
    74,438.55x = 111,661.34 × 21,843.63
  4. Step 4: Simplify right side
    74,438.55x = 2,439,088,887.05
  5. Step 5: Solve for x
    x = 2,439,088,887.05/74,438.55
  6. Step 6: Final answer
    x = 32,766.47

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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.