Home / 71,243.13-106,799.09-31,778.72

Finding the Fourth Proportional to 71,243.13, 106,799.09 and 31,778.72

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Solution

The fourth proportional to 71,243.13, 106,799.09 and 31,778.72 is: 47,638.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,243.13 : 106,799.09 = 31,778.72 : x
  2. Step 2: Convert to fraction form
    71,243.13/106,799.09 = 31,778.72/x
  3. Step 3: Cross multiply
    71,243.13x = 106,799.09 × 31,778.72
  4. Step 4: Simplify right side
    71,243.13x = 3,393,937,684.48
  5. Step 5: Solve for x
    x = 3,393,937,684.48/71,243.13
  6. Step 6: Final answer
    x = 47,638.81

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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.