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Finding the Fourth Proportional to 64,155.97, 96,227.76 and 19,770.80

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Solution

The fourth proportional to 64,155.97, 96,227.76 and 19,770.80 is: 29,654.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,155.97 : 96,227.76 = 19,770.80 : x
  2. Step 2: Convert to fraction form
    64,155.97/96,227.76 = 19,770.80/x
  3. Step 3: Cross multiply
    64,155.97x = 96,227.76 × 19,770.80
  4. Step 4: Simplify right side
    64,155.97x = 1,902,499,698.55
  5. Step 5: Solve for x
    x = 1,902,499,698.55/64,155.97
  6. Step 6: Final answer
    x = 29,654.29

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1.5x scale

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.