Home / 81,777.02-122,641.82-31,845.98

Finding the Fourth Proportional to 81,777.02, 122,641.82 and 31,845.98

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Solution

The fourth proportional to 81,777.02, 122,641.82 and 31,845.98 is: 47,759.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,777.02 : 122,641.82 = 31,845.98 : x
  2. Step 2: Convert to fraction form
    81,777.02/122,641.82 = 31,845.98/x
  3. Step 3: Cross multiply
    81,777.02x = 122,641.82 × 31,845.98
  4. Step 4: Simplify right side
    81,777.02x = 3,905,648,174.44
  5. Step 5: Solve for x
    x = 3,905,648,174.44/81,777.02
  6. Step 6: Final answer
    x = 47,759.73

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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.