Home / 71,513.28-98,691.75-39,682.44

Finding the Fourth Proportional to 71,513.28, 98,691.75 and 39,682.44

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Solution

The fourth proportional to 71,513.28, 98,691.75 and 39,682.44 is: 54,763.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,513.28 : 98,691.75 = 39,682.44 : x
  2. Step 2: Convert to fraction form
    71,513.28/98,691.75 = 39,682.44/x
  3. Step 3: Cross multiply
    71,513.28x = 98,691.75 × 39,682.44
  4. Step 4: Simplify right side
    71,513.28x = 3,916,329,447.87
  5. Step 5: Solve for x
    x = 3,916,329,447.87/71,513.28
  6. Step 6: Final answer
    x = 54,763.67

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1.5x scale

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.