Home / 85,418.31-117,884.57-47,699.85

Finding the Fourth Proportional to 85,418.31, 117,884.57 and 47,699.85

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Solution

The fourth proportional to 85,418.31, 117,884.57 and 47,699.85 is: 65,829.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,418.31 : 117,884.57 = 47,699.85 : x
  2. Step 2: Convert to fraction form
    85,418.31/117,884.57 = 47,699.85/x
  3. Step 3: Cross multiply
    85,418.31x = 117,884.57 × 47,699.85
  4. Step 4: Simplify right side
    85,418.31x = 5,623,076,306.31
  5. Step 5: Solve for x
    x = 5,623,076,306.31/85,418.31
  6. Step 6: Final answer
    x = 65,829.87

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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.