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Finding the Fourth Proportional to 56,287.80, 77,669.73 and 36,171.86

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Solution

The fourth proportional to 56,287.80, 77,669.73 and 36,171.86 is: 49,912.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,287.80 : 77,669.73 = 36,171.86 : x
  2. Step 2: Convert to fraction form
    56,287.80/77,669.73 = 36,171.86/x
  3. Step 3: Cross multiply
    56,287.80x = 77,669.73 × 36,171.86
  4. Step 4: Simplify right side
    56,287.80x = 2,809,458,211.45
  5. Step 5: Solve for x
    x = 2,809,458,211.45/56,287.80
  6. Step 6: Final answer
    x = 49,912.38

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.