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Finding the Fourth Proportional to 77,761.60, 116,469.60 and 63,937.60

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Solution

The fourth proportional to 77,761.60, 116,469.60 and 63,937.60 is: 95,764.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,761.60 : 116,469.60 = 63,937.60 : x
  2. Step 2: Convert to fraction form
    77,761.60/116,469.60 = 63,937.60/x
  3. Step 3: Cross multiply
    77,761.60x = 116,469.60 × 63,937.60
  4. Step 4: Simplify right side
    77,761.60x = 7,446,786,696.96
  5. Step 5: Solve for x
    x = 7,446,786,696.96/77,761.60
  6. Step 6: Final answer
    x = 95,764.32

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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.