Home / 85,856.90-118,481.76-48,131.15

Finding the Fourth Proportional to 85,856.90, 118,481.76 and 48,131.15

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Solution

The fourth proportional to 85,856.90, 118,481.76 and 48,131.15 is: 66,420.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,856.90 : 118,481.76 = 48,131.15 : x
  2. Step 2: Convert to fraction form
    85,856.90/118,481.76 = 48,131.15/x
  3. Step 3: Cross multiply
    85,856.90x = 118,481.76 × 48,131.15
  4. Step 4: Simplify right side
    85,856.90x = 5,702,663,659.03
  5. Step 5: Solve for x
    x = 5,702,663,659.03/85,856.90
  6. Step 6: Final answer
    x = 66,420.56

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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.