Home / 115,306.78-172,945.86-31,073.53

Finding the Fourth Proportional to 115,306.78, 172,945.86 and 31,073.53

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Solution

The fourth proportional to 115,306.78, 172,945.86 and 31,073.53 is: 46,606.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,306.78 : 172,945.86 = 31,073.53 : x
  2. Step 2: Convert to fraction form
    115,306.78/172,945.86 = 31,073.53/x
  3. Step 3: Cross multiply
    115,306.78x = 172,945.86 × 31,073.53
  4. Step 4: Simplify right side
    115,306.78x = 5,374,038,369.09
  5. Step 5: Solve for x
    x = 5,374,038,369.09/115,306.78
  6. Step 6: Final answer
    x = 46,606.44

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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.