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Finding the Fourth Proportional to 84,640.60, 126,993.30 and 37,859.86

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Solution

The fourth proportional to 84,640.60, 126,993.30 and 37,859.86 is: 56,804.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,640.60 : 126,993.30 = 37,859.86 : x
  2. Step 2: Convert to fraction form
    84,640.60/126,993.30 = 37,859.86/x
  3. Step 3: Cross multiply
    84,640.60x = 126,993.30 × 37,859.86
  4. Step 4: Simplify right side
    84,640.60x = 4,807,948,558.94
  5. Step 5: Solve for x
    x = 4,807,948,558.94/84,640.60
  6. Step 6: Final answer
    x = 56,804.28

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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.