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Finding the Fourth Proportional to 61,410.41, 92,131.71 and 19,288.79

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Solution

The fourth proportional to 61,410.41, 92,131.71 and 19,288.79 is: 28,938.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,410.41 : 92,131.71 = 19,288.79 : x
  2. Step 2: Convert to fraction form
    61,410.41/92,131.71 = 19,288.79/x
  3. Step 3: Cross multiply
    61,410.41x = 92,131.71 × 19,288.79
  4. Step 4: Simplify right side
    61,410.41x = 1,777,108,745.87
  5. Step 5: Solve for x
    x = 1,777,108,745.87/61,410.41
  6. Step 6: Final answer
    x = 28,938.24

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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.