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Finding the Fourth Proportional to 72,685.89, 109,096.31 and 37,172.59

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Solution

The fourth proportional to 72,685.89, 109,096.31 and 37,172.59 is: 55,793.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,685.89 : 109,096.31 = 37,172.59 : x
  2. Step 2: Convert to fraction form
    72,685.89/109,096.31 = 37,172.59/x
  3. Step 3: Cross multiply
    72,685.89x = 109,096.31 × 37,172.59
  4. Step 4: Simplify right side
    72,685.89x = 4,055,391,943.54
  5. Step 5: Solve for x
    x = 4,055,391,943.54/72,685.89
  6. Step 6: Final answer
    x = 55,793.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.