Home / 75,861.78-113,707.89-28,431.24

Finding the Fourth Proportional to 75,861.78, 113,707.89 and 28,431.24

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Solution

The fourth proportional to 75,861.78, 113,707.89 and 28,431.24 is: 42,615.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,861.78 : 113,707.89 = 28,431.24 : x
  2. Step 2: Convert to fraction form
    75,861.78/113,707.89 = 28,431.24/x
  3. Step 3: Cross multiply
    75,861.78x = 113,707.89 × 28,431.24
  4. Step 4: Simplify right side
    75,861.78x = 3,232,856,310.48
  5. Step 5: Solve for x
    x = 3,232,856,310.48/75,861.78
  6. Step 6: Final answer
    x = 42,615.09

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1.5x scale

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.