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Finding the Fourth Proportional to 64,086.12, 96,140.12 and 19,711.89

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Solution

The fourth proportional to 64,086.12, 96,140.12 and 19,711.89 is: 29,571.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,086.12 : 96,140.12 = 19,711.89 : x
  2. Step 2: Convert to fraction form
    64,086.12/96,140.12 = 19,711.89/x
  3. Step 3: Cross multiply
    64,086.12x = 96,140.12 × 19,711.89
  4. Step 4: Simplify right side
    64,086.12x = 1,895,103,371.47
  5. Step 5: Solve for x
    x = 1,895,103,371.47/64,086.12
  6. Step 6: Final answer
    x = 29,571.20

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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.