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Finding the Fourth Proportional to 72,021.44, 108,053.80 and 34,099.62

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Solution

The fourth proportional to 72,021.44, 108,053.80 and 34,099.62 is: 51,159.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,021.44 : 108,053.80 = 34,099.62 : x
  2. Step 2: Convert to fraction form
    72,021.44/108,053.80 = 34,099.62/x
  3. Step 3: Cross multiply
    72,021.44x = 108,053.80 × 34,099.62
  4. Step 4: Simplify right side
    72,021.44x = 3,684,593,519.56
  5. Step 5: Solve for x
    x = 3,684,593,519.56/72,021.44
  6. Step 6: Final answer
    x = 51,159.68

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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.