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Finding the Fourth Proportional to 64,092.79, 96,139.41 and 19,719.22

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Solution

The fourth proportional to 64,092.79, 96,139.41 and 19,719.22 is: 29,578.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,092.79 : 96,139.41 = 19,719.22 : x
  2. Step 2: Convert to fraction form
    64,092.79/96,139.41 = 19,719.22/x
  3. Step 3: Cross multiply
    64,092.79x = 96,139.41 × 19,719.22
  4. Step 4: Simplify right side
    64,092.79x = 1,895,794,176.46
  5. Step 5: Solve for x
    x = 1,895,794,176.46/64,092.79
  6. Step 6: Final answer
    x = 29,578.90

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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.