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Finding the Fourth Proportional to 40,978.20, 56,550.39 and 23,978.73

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Solution

The fourth proportional to 40,978.20, 56,550.39 and 23,978.73 is: 33,090.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,978.20 : 56,550.39 = 23,978.73 : x
  2. Step 2: Convert to fraction form
    40,978.20/56,550.39 = 23,978.73/x
  3. Step 3: Cross multiply
    40,978.20x = 56,550.39 × 23,978.73
  4. Step 4: Simplify right side
    40,978.20x = 1,356,006,533.20
  5. Step 5: Solve for x
    x = 1,356,006,533.20/40,978.20
  6. Step 6: Final answer
    x = 33,090.92

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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.