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Finding the Fourth Proportional to 85,314.86, 127,917.60 and 35,429.39

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Solution

The fourth proportional to 85,314.86, 127,917.60 and 35,429.39 is: 53,121.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,314.86 : 127,917.60 = 35,429.39 : x
  2. Step 2: Convert to fraction form
    85,314.86/127,917.60 = 35,429.39/x
  3. Step 3: Cross multiply
    85,314.86x = 127,917.60 × 35,429.39
  4. Step 4: Simplify right side
    85,314.86x = 4,532,041,898.68
  5. Step 5: Solve for x
    x = 4,532,041,898.68/85,314.86
  6. Step 6: Final answer
    x = 53,121.37

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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.