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Finding the Fourth Proportional to 64,816.60, 97,212.90 and 18,059.80

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Solution

The fourth proportional to 64,816.60, 97,212.90 and 18,059.80 is: 27,086.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,816.60 : 97,212.90 = 18,059.80 : x
  2. Step 2: Convert to fraction form
    64,816.60/97,212.90 = 18,059.80/x
  3. Step 3: Cross multiply
    64,816.60x = 97,212.90 × 18,059.80
  4. Step 4: Simplify right side
    64,816.60x = 1,755,645,531.42
  5. Step 5: Solve for x
    x = 1,755,645,531.42/64,816.60
  6. Step 6: Final answer
    x = 27,086.36

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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.