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Finding the Fourth Proportional to 72,679.73, 100,290 and 43,606.56

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Solution

The fourth proportional to 72,679.73, 100,290 and 43,606.56 is: 60,172.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,679.73 : 100,290 = 43,606.56 : x
  2. Step 2: Convert to fraction form
    72,679.73/100,290 = 43,606.56/x
  3. Step 3: Cross multiply
    72,679.73x = 100,290 × 43,606.56
  4. Step 4: Simplify right side
    72,679.73x = 4,373,301,902.40
  5. Step 5: Solve for x
    x = 4,373,301,902.40/72,679.73
  6. Step 6: Final answer
    x = 60,172.24

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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.