Home / 115,617.78-173,438.21-31,379.30

Finding the Fourth Proportional to 115,617.78, 173,438.21 and 31,379.30

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Solution

The fourth proportional to 115,617.78, 173,438.21 and 31,379.30 is: 47,072.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,617.78 : 173,438.21 = 31,379.30 : x
  2. Step 2: Convert to fraction form
    115,617.78/173,438.21 = 31,379.30/x
  3. Step 3: Cross multiply
    115,617.78x = 173,438.21 × 31,379.30
  4. Step 4: Simplify right side
    115,617.78x = 5,442,369,484.70
  5. Step 5: Solve for x
    x = 5,442,369,484.70/115,617.78
  6. Step 6: Final answer
    x = 47,072.08

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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.