Home / 73,057.20-100,830.36-55,172.40

Finding the Fourth Proportional to 73,057.20, 100,830.36 and 55,172.40

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Solution

The fourth proportional to 73,057.20, 100,830.36 and 55,172.40 is: 76,146.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,057.20 : 100,830.36 = 55,172.40 : x
  2. Step 2: Convert to fraction form
    73,057.20/100,830.36 = 55,172.40/x
  3. Step 3: Cross multiply
    73,057.20x = 100,830.36 × 55,172.40
  4. Step 4: Simplify right side
    73,057.20x = 5,563,052,954.06
  5. Step 5: Solve for x
    x = 5,563,052,954.06/73,057.20
  6. Step 6: Final answer
    x = 76,146.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.