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Finding the Fourth Proportional to 71,322.70, 106,984.05 and 43,329.10

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Solution

The fourth proportional to 71,322.70, 106,984.05 and 43,329.10 is: 64,993.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,322.70 : 106,984.05 = 43,329.10 : x
  2. Step 2: Convert to fraction form
    71,322.70/106,984.05 = 43,329.10/x
  3. Step 3: Cross multiply
    71,322.70x = 106,984.05 × 43,329.10
  4. Step 4: Simplify right side
    71,322.70x = 4,635,522,600.86
  5. Step 5: Solve for x
    x = 4,635,522,600.86/71,322.70
  6. Step 6: Final answer
    x = 64,993.65

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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.