Home / 85,236.18-117,838.50-63,978.54

Finding the Fourth Proportional to 85,236.18, 117,838.50 and 63,978.54

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Solution

The fourth proportional to 85,236.18, 117,838.50 and 63,978.54 is: 88,449.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,236.18 : 117,838.50 = 63,978.54 : x
  2. Step 2: Convert to fraction form
    85,236.18/117,838.50 = 63,978.54/x
  3. Step 3: Cross multiply
    85,236.18x = 117,838.50 × 63,978.54
  4. Step 4: Simplify right side
    85,236.18x = 7,539,135,185.79
  5. Step 5: Solve for x
    x = 7,539,135,185.79/85,236.18
  6. Step 6: Final answer
    x = 88,449.94

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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.