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Finding the Fourth Proportional to 78,829.34, 118,240.70 and 36,694.94

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Solution

The fourth proportional to 78,829.34, 118,240.70 and 36,694.94 is: 55,040.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,829.34 : 118,240.70 = 36,694.94 : x
  2. Step 2: Convert to fraction form
    78,829.34/118,240.70 = 36,694.94/x
  3. Step 3: Cross multiply
    78,829.34x = 118,240.70 × 36,694.94
  4. Step 4: Simplify right side
    78,829.34x = 4,338,834,617.38
  5. Step 5: Solve for x
    x = 4,338,834,617.38/78,829.34
  6. Step 6: Final answer
    x = 55,040.86

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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.