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Finding the Fourth Proportional to 40,388, 55,735.92 and 22,483.76

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Solution

The fourth proportional to 40,388, 55,735.92 and 22,483.76 is: 31,027.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,388 : 55,735.92 = 22,483.76 : x
  2. Step 2: Convert to fraction form
    40,388/55,735.92 = 22,483.76/x
  3. Step 3: Cross multiply
    40,388x = 55,735.92 × 22,483.76
  4. Step 4: Simplify right side
    40,388x = 1,253,153,048.66
  5. Step 5: Solve for x
    x = 1,253,153,048.66/40,388
  6. Step 6: Final answer
    x = 31,027.86

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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.