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Finding the Fourth Proportional to 64,940.20, 97,409.24 and 20,566.88

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Solution

The fourth proportional to 64,940.20, 97,409.24 and 20,566.88 is: 30,849.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,940.20 : 97,409.24 = 20,566.88 : x
  2. Step 2: Convert to fraction form
    64,940.20/97,409.24 = 20,566.88/x
  3. Step 3: Cross multiply
    64,940.20x = 97,409.24 × 20,566.88
  4. Step 4: Simplify right side
    64,940.20x = 2,003,404,149.97
  5. Step 5: Solve for x
    x = 2,003,404,149.97/64,940.20
  6. Step 6: Final answer
    x = 30,849.98

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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.