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Finding the Fourth Proportional to 31,189.68, 43,041.69 and 17,042.49

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Solution

The fourth proportional to 31,189.68, 43,041.69 and 17,042.49 is: 23,518.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,189.68 : 43,041.69 = 17,042.49 : x
  2. Step 2: Convert to fraction form
    31,189.68/43,041.69 = 17,042.49/x
  3. Step 3: Cross multiply
    31,189.68x = 43,041.69 × 17,042.49
  4. Step 4: Simplify right side
    31,189.68x = 733,537,571.41
  5. Step 5: Solve for x
    x = 733,537,571.41/31,189.68
  6. Step 6: Final answer
    x = 23,518.60

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.