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Finding the Fourth Proportional to 65,540.03, 90,448.94 and 49,596.80

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Solution

The fourth proportional to 65,540.03, 90,448.94 and 49,596.80 is: 68,446.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,540.03 : 90,448.94 = 49,596.80 : x
  2. Step 2: Convert to fraction form
    65,540.03/90,448.94 = 49,596.80/x
  3. Step 3: Cross multiply
    65,540.03x = 90,448.94 × 49,596.80
  4. Step 4: Simplify right side
    65,540.03x = 4,485,977,739.41
  5. Step 5: Solve for x
    x = 4,485,977,739.41/65,540.03
  6. Step 6: Final answer
    x = 68,446.38

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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.