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Finding the Fourth Proportional to 61,872.31, 92,826.87 and 19,755.10

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Solution

The fourth proportional to 61,872.31, 92,826.87 and 19,755.10 is: 29,638.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,872.31 : 92,826.87 = 19,755.10 : x
  2. Step 2: Convert to fraction form
    61,872.31/92,826.87 = 19,755.10/x
  3. Step 3: Cross multiply
    61,872.31x = 92,826.87 × 19,755.10
  4. Step 4: Simplify right side
    61,872.31x = 1,833,804,099.54
  5. Step 5: Solve for x
    x = 1,833,804,099.54/61,872.31
  6. Step 6: Final answer
    x = 29,638.53

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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.