Home / 85,319.10-117,739.56-47,079

Finding the Fourth Proportional to 85,319.10, 117,739.56 and 47,079

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Solution

The fourth proportional to 85,319.10, 117,739.56 and 47,079 is: 64,968.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,319.10 : 117,739.56 = 47,079 : x
  2. Step 2: Convert to fraction form
    85,319.10/117,739.56 = 47,079/x
  3. Step 3: Cross multiply
    85,319.10x = 117,739.56 × 47,079
  4. Step 4: Simplify right side
    85,319.10x = 5,543,060,745.24
  5. Step 5: Solve for x
    x = 5,543,060,745.24/85,319.10
  6. Step 6: Final answer
    x = 64,968.58

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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.