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Finding the Fourth Proportional to 43,993.74, 65,985.42 and 12,406.17

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Solution

The fourth proportional to 43,993.74, 65,985.42 and 12,406.17 is: 18,607.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,993.74 : 65,985.42 = 12,406.17 : x
  2. Step 2: Convert to fraction form
    43,993.74/65,985.42 = 12,406.17/x
  3. Step 3: Cross multiply
    43,993.74x = 65,985.42 × 12,406.17
  4. Step 4: Simplify right side
    43,993.74x = 818,626,338.04
  5. Step 5: Solve for x
    x = 818,626,338.04/43,993.74
  6. Step 6: Final answer
    x = 18,607.79

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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.