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Finding the Fourth Proportional to 74,001.60, 110,970 and 21,409.92

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Solution

The fourth proportional to 74,001.60, 110,970 and 21,409.92 is: 32,105.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,001.60 : 110,970 = 21,409.92 : x
  2. Step 2: Convert to fraction form
    74,001.60/110,970 = 21,409.92/x
  3. Step 3: Cross multiply
    74,001.60x = 110,970 × 21,409.92
  4. Step 4: Simplify right side
    74,001.60x = 2,375,858,822.40
  5. Step 5: Solve for x
    x = 2,375,858,822.40/74,001.60
  6. Step 6: Final answer
    x = 32,105.51

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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.