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Finding the Fourth Proportional to 64,659.56, 96,989.08 and 17,912.28

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Solution

The fourth proportional to 64,659.56, 96,989.08 and 17,912.28 is: 26,868.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,659.56 : 96,989.08 = 17,912.28 : x
  2. Step 2: Convert to fraction form
    64,659.56/96,989.08 = 17,912.28/x
  3. Step 3: Cross multiply
    64,659.56x = 96,989.08 × 17,912.28
  4. Step 4: Simplify right side
    64,659.56x = 1,737,295,557.90
  5. Step 5: Solve for x
    x = 1,737,295,557.90/64,659.56
  6. Step 6: Final answer
    x = 26,868.35

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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.