Home / 75,904.86-113,857.05-20,500.86

Finding the Fourth Proportional to 75,904.86, 113,857.05 and 20,500.86

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Solution

The fourth proportional to 75,904.86, 113,857.05 and 20,500.86 is: 30,751.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,904.86 : 113,857.05 = 20,500.86 : x
  2. Step 2: Convert to fraction form
    75,904.86/113,857.05 = 20,500.86/x
  3. Step 3: Cross multiply
    75,904.86x = 113,857.05 × 20,500.86
  4. Step 4: Simplify right side
    75,904.86x = 2,334,167,442.06
  5. Step 5: Solve for x
    x = 2,334,167,442.06/75,904.86
  6. Step 6: Final answer
    x = 30,751.23

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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.