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Finding the Fourth Proportional to 78,744.70, 117,757.95 and 58,768.30

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Solution

The fourth proportional to 78,744.70, 117,757.95 and 58,768.30 is: 87,884.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,744.70 : 117,757.95 = 58,768.30 : x
  2. Step 2: Convert to fraction form
    78,744.70/117,757.95 = 58,768.30/x
  3. Step 3: Cross multiply
    78,744.70x = 117,757.95 × 58,768.30
  4. Step 4: Simplify right side
    78,744.70x = 6,920,434,532.99
  5. Step 5: Solve for x
    x = 6,920,434,532.99/78,744.70
  6. Step 6: Final answer
    x = 87,884.45

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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.