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Finding the Fourth Proportional to 77,789.60, 116,684.40 and 33,408.80

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Solution

The fourth proportional to 77,789.60, 116,684.40 and 33,408.80 is: 50,113.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,789.60 : 116,684.40 = 33,408.80 : x
  2. Step 2: Convert to fraction form
    77,789.60/116,684.40 = 33,408.80/x
  3. Step 3: Cross multiply
    77,789.60x = 116,684.40 × 33,408.80
  4. Step 4: Simplify right side
    77,789.60x = 3,898,285,782.72
  5. Step 5: Solve for x
    x = 3,898,285,782.72/77,789.60
  6. Step 6: Final answer
    x = 50,113.20

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1.5x scale

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.