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Finding the Fourth Proportional to 64,659.50, 96,978.21 and 17,901.44

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Solution

The fourth proportional to 64,659.50, 96,978.21 and 17,901.44 is: 26,849.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,659.50 : 96,978.21 = 17,901.44 : x
  2. Step 2: Convert to fraction form
    64,659.50/96,978.21 = 17,901.44/x
  3. Step 3: Cross multiply
    64,659.50x = 96,978.21 × 17,901.44
  4. Step 4: Simplify right side
    64,659.50x = 1,736,049,607.62
  5. Step 5: Solve for x
    x = 1,736,049,607.62/64,659.50
  6. Step 6: Final answer
    x = 26,849.10

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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.