Home / 81,600.47-122,376.10-31,669.44

Finding the Fourth Proportional to 81,600.47, 122,376.10 and 31,669.44

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Solution

The fourth proportional to 81,600.47, 122,376.10 and 31,669.44 is: 47,494.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,600.47 : 122,376.10 = 31,669.44 : x
  2. Step 2: Convert to fraction form
    81,600.47/122,376.10 = 31,669.44/x
  3. Step 3: Cross multiply
    81,600.47x = 122,376.10 × 31,669.44
  4. Step 4: Simplify right side
    81,600.47x = 3,875,582,556.38
  5. Step 5: Solve for x
    x = 3,875,582,556.38/81,600.47
  6. Step 6: Final answer
    x = 47,494.61

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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.