Home / 105,438.98-145,504.56-57,691.82

Finding the Fourth Proportional to 105,438.98, 145,504.56 and 57,691.82

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Solution

The fourth proportional to 105,438.98, 145,504.56 and 57,691.82 is: 79,614.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,438.98 : 145,504.56 = 57,691.82 : x
  2. Step 2: Convert to fraction form
    105,438.98/145,504.56 = 57,691.82/x
  3. Step 3: Cross multiply
    105,438.98x = 145,504.56 × 57,691.82
  4. Step 4: Simplify right side
    105,438.98x = 8,394,422,884.70
  5. Step 5: Solve for x
    x = 8,394,422,884.70/105,438.98
  6. Step 6: Final answer
    x = 79,614.04

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Why These Related Problems?

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