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Finding the Fourth Proportional to 33,318.64, 45,978.37 and 19,715.50

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Solution

The fourth proportional to 33,318.64, 45,978.37 and 19,715.50 is: 27,206.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,318.64 : 45,978.37 = 19,715.50 : x
  2. Step 2: Convert to fraction form
    33,318.64/45,978.37 = 19,715.50/x
  3. Step 3: Cross multiply
    33,318.64x = 45,978.37 × 19,715.50
  4. Step 4: Simplify right side
    33,318.64x = 906,486,553.74
  5. Step 5: Solve for x
    x = 906,486,553.74/33,318.64
  6. Step 6: Final answer
    x = 27,206.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.