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Finding the Fourth Proportional to 74,204.28, 110,644.50 and 65,961.72

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Solution

The fourth proportional to 74,204.28, 110,644.50 and 65,961.72 is: 98,354.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,204.28 : 110,644.50 = 65,961.72 : x
  2. Step 2: Convert to fraction form
    74,204.28/110,644.50 = 65,961.72/x
  3. Step 3: Cross multiply
    74,204.28x = 110,644.50 × 65,961.72
  4. Step 4: Simplify right side
    74,204.28x = 7,298,301,528.54
  5. Step 5: Solve for x
    x = 7,298,301,528.54/74,204.28
  6. Step 6: Final answer
    x = 98,354.19

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.