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Finding the Fourth Proportional to 77,099.86, 115,571.01 and 43,749.48

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Solution

The fourth proportional to 77,099.86, 115,571.01 and 43,749.48 is: 65,579.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,099.86 : 115,571.01 = 43,749.48 : x
  2. Step 2: Convert to fraction form
    77,099.86/115,571.01 = 43,749.48/x
  3. Step 3: Cross multiply
    77,099.86x = 115,571.01 × 43,749.48
  4. Step 4: Simplify right side
    77,099.86x = 5,056,171,590.57
  5. Step 5: Solve for x
    x = 5,056,171,590.57/77,099.86
  6. Step 6: Final answer
    x = 65,579.52

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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.