Home / 75,557.28-113,163.48-36,142.20

Finding the Fourth Proportional to 75,557.28, 113,163.48 and 36,142.20

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Solution

The fourth proportional to 75,557.28, 113,163.48 and 36,142.20 is: 54,130.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,557.28 : 113,163.48 = 36,142.20 : x
  2. Step 2: Convert to fraction form
    75,557.28/113,163.48 = 36,142.20/x
  3. Step 3: Cross multiply
    75,557.28x = 113,163.48 × 36,142.20
  4. Step 4: Simplify right side
    75,557.28x = 4,089,977,126.86
  5. Step 5: Solve for x
    x = 4,089,977,126.86/75,557.28
  6. Step 6: Final answer
    x = 54,130.81

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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.