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Finding the Fourth Proportional to 79,218.40, 118,845.60 and 26,633.20

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Solution

The fourth proportional to 79,218.40, 118,845.60 and 26,633.20 is: 39,955.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,218.40 : 118,845.60 = 26,633.20 : x
  2. Step 2: Convert to fraction form
    79,218.40/118,845.60 = 26,633.20/x
  3. Step 3: Cross multiply
    79,218.40x = 118,845.60 × 26,633.20
  4. Step 4: Simplify right side
    79,218.40x = 3,165,238,633.92
  5. Step 5: Solve for x
    x = 3,165,238,633.92/79,218.40
  6. Step 6: Final answer
    x = 39,955.85

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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.