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Finding the Fourth Proportional to 81,820.72, 122,605.36 and 48,474.44

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Solution

The fourth proportional to 81,820.72, 122,605.36 and 48,474.44 is: 72,637.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,820.72 : 122,605.36 = 48,474.44 : x
  2. Step 2: Convert to fraction form
    81,820.72/122,605.36 = 48,474.44/x
  3. Step 3: Cross multiply
    81,820.72x = 122,605.36 × 48,474.44
  4. Step 4: Simplify right side
    81,820.72x = 5,943,226,167.00
  5. Step 5: Solve for x
    x = 5,943,226,167.00/81,820.72
  6. Step 6: Final answer
    x = 72,637.18

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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.