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Finding the Fourth Proportional to 62,965.60, 86,847.60 and 40,588

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Solution

The fourth proportional to 62,965.60, 86,847.60 and 40,588 is: 55,982.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,965.60 : 86,847.60 = 40,588 : x
  2. Step 2: Convert to fraction form
    62,965.60/86,847.60 = 40,588/x
  3. Step 3: Cross multiply
    62,965.60x = 86,847.60 × 40,588
  4. Step 4: Simplify right side
    62,965.60x = 3,524,970,388.80
  5. Step 5: Solve for x
    x = 3,524,970,388.80/62,965.60
  6. Step 6: Final answer
    x = 55,982.48

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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.