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Finding the Fourth Proportional to 43,999.40, 65,999.10 and 38,930.60

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Solution

The fourth proportional to 43,999.40, 65,999.10 and 38,930.60 is: 58,395.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,999.40 : 65,999.10 = 38,930.60 : x
  2. Step 2: Convert to fraction form
    43,999.40/65,999.10 = 38,930.60/x
  3. Step 3: Cross multiply
    43,999.40x = 65,999.10 × 38,930.60
  4. Step 4: Simplify right side
    43,999.40x = 2,569,384,562.46
  5. Step 5: Solve for x
    x = 2,569,384,562.46/43,999.40
  6. Step 6: Final answer
    x = 58,395.90

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1.5x scale

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.