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Finding the Fourth Proportional to 65,479.27, 90,358.99 and 40,028.26

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Solution

The fourth proportional to 65,479.27, 90,358.99 and 40,028.26 is: 55,237.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,479.27 : 90,358.99 = 40,028.26 : x
  2. Step 2: Convert to fraction form
    65,479.27/90,358.99 = 40,028.26/x
  3. Step 3: Cross multiply
    65,479.27x = 90,358.99 × 40,028.26
  4. Step 4: Simplify right side
    65,479.27x = 3,616,912,819.09
  5. Step 5: Solve for x
    x = 3,616,912,819.09/65,479.27
  6. Step 6: Final answer
    x = 55,237.53

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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.