Home / 71,112.40-106,717.20-51,407.80

Finding the Fourth Proportional to 71,112.40, 106,717.20 and 51,407.80

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Solution

The fourth proportional to 71,112.40, 106,717.20 and 51,407.80 is: 77,146.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,112.40 : 106,717.20 = 51,407.80 : x
  2. Step 2: Convert to fraction form
    71,112.40/106,717.20 = 51,407.80/x
  3. Step 3: Cross multiply
    71,112.40x = 106,717.20 × 51,407.80
  4. Step 4: Simplify right side
    71,112.40x = 5,486,096,474.16
  5. Step 5: Solve for x
    x = 5,486,096,474.16/71,112.40
  6. Step 6: Final answer
    x = 77,146.83

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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.