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Finding the Fourth Proportional to 72,003.20, 107,815.80 and 50,828.90

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Solution

The fourth proportional to 72,003.20, 107,815.80 and 50,828.90 is: 76,109.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,003.20 : 107,815.80 = 50,828.90 : x
  2. Step 2: Convert to fraction form
    72,003.20/107,815.80 = 50,828.90/x
  3. Step 3: Cross multiply
    72,003.20x = 107,815.80 × 50,828.90
  4. Step 4: Simplify right side
    72,003.20x = 5,480,158,516.62
  5. Step 5: Solve for x
    x = 5,480,158,516.62/72,003.20
  6. Step 6: Final answer
    x = 76,109.93

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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.