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Finding the Fourth Proportional to 56,641.89, 84,976.80 and 28,192.39

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Solution

The fourth proportional to 56,641.89, 84,976.80 and 28,192.39 is: 42,295.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,641.89 : 84,976.80 = 28,192.39 : x
  2. Step 2: Convert to fraction form
    56,641.89/84,976.80 = 28,192.39/x
  3. Step 3: Cross multiply
    56,641.89x = 84,976.80 × 28,192.39
  4. Step 4: Simplify right side
    56,641.89x = 2,395,699,086.55
  5. Step 5: Solve for x
    x = 2,395,699,086.55/56,641.89
  6. Step 6: Final answer
    x = 42,295.54

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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.