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Finding the Fourth Proportional to 71,689, 107,483.28 and 33,716.20

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Solution

The fourth proportional to 71,689, 107,483.28 and 33,716.20 is: 50,550.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,689 : 107,483.28 = 33,716.20 : x
  2. Step 2: Convert to fraction form
    71,689/107,483.28 = 33,716.20/x
  3. Step 3: Cross multiply
    71,689x = 107,483.28 × 33,716.20
  4. Step 4: Simplify right side
    71,689x = 3,623,927,765.14
  5. Step 5: Solve for x
    x = 3,623,927,765.14/71,689
  6. Step 6: Final answer
    x = 50,550.68

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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.