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Finding the Fourth Proportional to 72,617.34, 100,190.28 and 43,947.60

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Solution

The fourth proportional to 72,617.34, 100,190.28 and 43,947.60 is: 60,634.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,617.34 : 100,190.28 = 43,947.60 : x
  2. Step 2: Convert to fraction form
    72,617.34/100,190.28 = 43,947.60/x
  3. Step 3: Cross multiply
    72,617.34x = 100,190.28 × 43,947.60
  4. Step 4: Simplify right side
    72,617.34x = 4,403,122,349.33
  5. Step 5: Solve for x
    x = 4,403,122,349.33/72,617.34
  6. Step 6: Final answer
    x = 60,634.59

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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.