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Finding the Fourth Proportional to 121,912.80, 182,889.51 and 41,947.50

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Solution

The fourth proportional to 121,912.80, 182,889.51 and 41,947.50 is: 62,928.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,912.80 : 182,889.51 = 41,947.50 : x
  2. Step 2: Convert to fraction form
    121,912.80/182,889.51 = 41,947.50/x
  3. Step 3: Cross multiply
    121,912.80x = 182,889.51 × 41,947.50
  4. Step 4: Simplify right side
    121,912.80x = 7,671,757,720.73
  5. Step 5: Solve for x
    x = 7,671,757,720.73/121,912.80
  6. Step 6: Final answer
    x = 62,928.24

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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.