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Finding the Fourth Proportional to 39,716.40, 59,617.80 and 22,220.40

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Solution

The fourth proportional to 39,716.40, 59,617.80 and 22,220.40 is: 33,354.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,716.40 : 59,617.80 = 22,220.40 : x
  2. Step 2: Convert to fraction form
    39,716.40/59,617.80 = 22,220.40/x
  3. Step 3: Cross multiply
    39,716.40x = 59,617.80 × 22,220.40
  4. Step 4: Simplify right side
    39,716.40x = 1,324,731,363.12
  5. Step 5: Solve for x
    x = 1,324,731,363.12/39,716.40
  6. Step 6: Final answer
    x = 33,354.77

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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.