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Finding the Fourth Proportional to 61,352.78, 92,024.30 and 21,905.78

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Solution

The fourth proportional to 61,352.78, 92,024.30 and 21,905.78 is: 32,856.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,352.78 : 92,024.30 = 21,905.78 : x
  2. Step 2: Convert to fraction form
    61,352.78/92,024.30 = 21,905.78/x
  3. Step 3: Cross multiply
    61,352.78x = 92,024.30 × 21,905.78
  4. Step 4: Simplify right side
    61,352.78x = 2,015,863,665.10
  5. Step 5: Solve for x
    x = 2,015,863,665.10/61,352.78
  6. Step 6: Final answer
    x = 32,856.93

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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.