Home / 74,372.31-111,691.71-68,438.25

Finding the Fourth Proportional to 74,372.31, 111,691.71 and 68,438.25

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Solution

The fourth proportional to 74,372.31, 111,691.71 and 68,438.25 is: 102,779.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,372.31 : 111,691.71 = 68,438.25 : x
  2. Step 2: Convert to fraction form
    74,372.31/111,691.71 = 68,438.25/x
  3. Step 3: Cross multiply
    74,372.31x = 111,691.71 × 68,438.25
  4. Step 4: Simplify right side
    74,372.31x = 7,643,985,171.91
  5. Step 5: Solve for x
    x = 7,643,985,171.91/74,372.31
  6. Step 6: Final answer
    x = 102,779.99

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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.