Home / 78,997.72-109,012.44-43,180.60

Finding the Fourth Proportional to 78,997.72, 109,012.44 and 43,180.60

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Solution

The fourth proportional to 78,997.72, 109,012.44 and 43,180.60 is: 59,586.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,997.72 : 109,012.44 = 43,180.60 : x
  2. Step 2: Convert to fraction form
    78,997.72/109,012.44 = 43,180.60/x
  3. Step 3: Cross multiply
    78,997.72x = 109,012.44 × 43,180.60
  4. Step 4: Simplify right side
    78,997.72x = 4,707,222,566.66
  5. Step 5: Solve for x
    x = 4,707,222,566.66/78,997.72
  6. Step 6: Final answer
    x = 59,586.82

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1.5x scale

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.