Home / 71,140.28-106,716.49-21,217.14

Finding the Fourth Proportional to 71,140.28, 106,716.49 and 21,217.14

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Solution

The fourth proportional to 71,140.28, 106,716.49 and 21,217.14 is: 31,827.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,140.28 : 106,716.49 = 21,217.14 : x
  2. Step 2: Convert to fraction form
    71,140.28/106,716.49 = 21,217.14/x
  3. Step 3: Cross multiply
    71,140.28x = 106,716.49 × 21,217.14
  4. Step 4: Simplify right side
    71,140.28x = 2,264,218,655.60
  5. Step 5: Solve for x
    x = 2,264,218,655.60/71,140.28
  6. Step 6: Final answer
    x = 31,827.52

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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.