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Finding the Fourth Proportional to 73,201.60, 109,726.80 and 39,851.20

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Solution

The fourth proportional to 73,201.60, 109,726.80 and 39,851.20 is: 59,735.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,201.60 : 109,726.80 = 39,851.20 : x
  2. Step 2: Convert to fraction form
    73,201.60/109,726.80 = 39,851.20/x
  3. Step 3: Cross multiply
    73,201.60x = 109,726.80 × 39,851.20
  4. Step 4: Simplify right side
    73,201.60x = 4,372,744,652.16
  5. Step 5: Solve for x
    x = 4,372,744,652.16/73,201.60
  6. Step 6: Final answer
    x = 59,735.64

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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.