Home / 55,172.56-82,800.42-40,419.28

Finding the Fourth Proportional to 55,172.56, 82,800.42 and 40,419.28

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Solution

The fourth proportional to 55,172.56, 82,800.42 and 40,419.28 is: 60,659.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,172.56 : 82,800.42 = 40,419.28 : x
  2. Step 2: Convert to fraction form
    55,172.56/82,800.42 = 40,419.28/x
  3. Step 3: Cross multiply
    55,172.56x = 82,800.42 × 40,419.28
  4. Step 4: Simplify right side
    55,172.56x = 3,346,733,360.10
  5. Step 5: Solve for x
    x = 3,346,733,360.10/55,172.56
  6. Step 6: Final answer
    x = 60,659.38

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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.