Home / 85,356.24-117,791.60-47,115.78

Finding the Fourth Proportional to 85,356.24, 117,791.60 and 47,115.78

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Solution

The fourth proportional to 85,356.24, 117,791.60 and 47,115.78 is: 65,019.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,356.24 : 117,791.60 = 47,115.78 : x
  2. Step 2: Convert to fraction form
    85,356.24/117,791.60 = 47,115.78/x
  3. Step 3: Cross multiply
    85,356.24x = 117,791.60 × 47,115.78
  4. Step 4: Simplify right side
    85,356.24x = 5,549,842,997.34
  5. Step 5: Solve for x
    x = 5,549,842,997.34/85,356.24
  6. Step 6: Final answer
    x = 65,019.77

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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.