Home / 34,118.40-51,177.60-20,812.80

Finding the Fourth Proportional to 34,118.40, 51,177.60 and 20,812.80

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Solution

The fourth proportional to 34,118.40, 51,177.60 and 20,812.80 is: 31,219.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,118.40 : 51,177.60 = 20,812.80 : x
  2. Step 2: Convert to fraction form
    34,118.40/51,177.60 = 20,812.80/x
  3. Step 3: Cross multiply
    34,118.40x = 51,177.60 × 20,812.80
  4. Step 4: Simplify right side
    34,118.40x = 1,065,149,153.28
  5. Step 5: Solve for x
    x = 1,065,149,153.28/34,118.40
  6. Step 6: Final answer
    x = 31,219.20

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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.