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Finding the Fourth Proportional to 61,264.40, 91,896.60 and 21,822.80

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Solution

The fourth proportional to 61,264.40, 91,896.60 and 21,822.80 is: 32,734.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,264.40 : 91,896.60 = 21,822.80 : x
  2. Step 2: Convert to fraction form
    61,264.40/91,896.60 = 21,822.80/x
  3. Step 3: Cross multiply
    61,264.40x = 91,896.60 × 21,822.80
  4. Step 4: Simplify right side
    61,264.40x = 2,005,441,122.48
  5. Step 5: Solve for x
    x = 2,005,441,122.48/61,264.40
  6. Step 6: Final answer
    x = 32,734.20

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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.