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Finding the Fourth Proportional to 31,181.90, 43,030.85 and 17,034.71

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Solution

The fourth proportional to 31,181.90, 43,030.85 and 17,034.71 is: 23,507.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,181.90 : 43,030.85 = 17,034.71 : x
  2. Step 2: Convert to fraction form
    31,181.90/43,030.85 = 17,034.71/x
  3. Step 3: Cross multiply
    31,181.90x = 43,030.85 × 17,034.71
  4. Step 4: Simplify right side
    31,181.90x = 733,017,750.48
  5. Step 5: Solve for x
    x = 733,017,750.48/31,181.90
  6. Step 6: Final answer
    x = 23,507.80

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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.