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Finding the Fourth Proportional to 56,860.92, 85,301.10 and 19,418.94

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Solution

The fourth proportional to 56,860.92, 85,301.10 and 19,418.94 is: 29,131.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,860.92 : 85,301.10 = 19,418.94 : x
  2. Step 2: Convert to fraction form
    56,860.92/85,301.10 = 19,418.94/x
  3. Step 3: Cross multiply
    56,860.92x = 85,301.10 × 19,418.94
  4. Step 4: Simplify right side
    56,860.92x = 1,656,456,942.83
  5. Step 5: Solve for x
    x = 1,656,456,942.83/56,860.92
  6. Step 6: Final answer
    x = 29,131.73

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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.