Home / 81,451.98-122,102.24-31,564.62

Finding the Fourth Proportional to 81,451.98, 122,102.24 and 31,564.62

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Solution

The fourth proportional to 81,451.98, 122,102.24 and 31,564.62 is: 47,317.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,451.98 : 122,102.24 = 31,564.62 : x
  2. Step 2: Convert to fraction form
    81,451.98/122,102.24 = 31,564.62/x
  3. Step 3: Cross multiply
    81,451.98x = 122,102.24 × 31,564.62
  4. Step 4: Simplify right side
    81,451.98x = 3,854,110,648.93
  5. Step 5: Solve for x
    x = 3,854,110,648.93/81,451.98
  6. Step 6: Final answer
    x = 47,317.58

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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.