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Finding the Fourth Proportional to 72,122.38, 107,994.30 and 50,947.90

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Solution

The fourth proportional to 72,122.38, 107,994.30 and 50,947.90 is: 76,288.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,122.38 : 107,994.30 = 50,947.90 : x
  2. Step 2: Convert to fraction form
    72,122.38/107,994.30 = 50,947.90/x
  3. Step 3: Cross multiply
    72,122.38x = 107,994.30 × 50,947.90
  4. Step 4: Simplify right side
    72,122.38x = 5,502,082,796.97
  5. Step 5: Solve for x
    x = 5,502,082,796.97/72,122.38
  6. Step 6: Final answer
    x = 76,288.15

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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.