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Finding the Fourth Proportional to 43,855.80, 65,862.90 and 38,412.60

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Solution

The fourth proportional to 43,855.80, 65,862.90 and 38,412.60 is: 57,688.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,855.80 : 65,862.90 = 38,412.60 : x
  2. Step 2: Convert to fraction form
    43,855.80/65,862.90 = 38,412.60/x
  3. Step 3: Cross multiply
    43,855.80x = 65,862.90 × 38,412.60
  4. Step 4: Simplify right side
    43,855.80x = 2,529,965,232.54
  5. Step 5: Solve for x
    x = 2,529,965,232.54/43,855.80
  6. Step 6: Final answer
    x = 57,688.27

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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.