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Finding the Fourth Proportional to 71,862.25, 107,711.63 and 43,720.27

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Solution

The fourth proportional to 71,862.25, 107,711.63 and 43,720.27 is: 65,530.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,862.25 : 107,711.63 = 43,720.27 : x
  2. Step 2: Convert to fraction form
    71,862.25/107,711.63 = 43,720.27/x
  3. Step 3: Cross multiply
    71,862.25x = 107,711.63 × 43,720.27
  4. Step 4: Simplify right side
    71,862.25x = 4,709,181,057.86
  5. Step 5: Solve for x
    x = 4,709,181,057.86/71,862.25
  6. Step 6: Final answer
    x = 65,530.67

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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.