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Finding the Fourth Proportional to 73,740.68, 110,627.42 and 21,146.06

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Solution

The fourth proportional to 73,740.68, 110,627.42 and 21,146.06 is: 31,723.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,740.68 : 110,627.42 = 21,146.06 : x
  2. Step 2: Convert to fraction form
    73,740.68/110,627.42 = 21,146.06/x
  3. Step 3: Cross multiply
    73,740.68x = 110,627.42 × 21,146.06
  4. Step 4: Simplify right side
    73,740.68x = 2,339,334,350.75
  5. Step 5: Solve for x
    x = 2,339,334,350.75/73,740.68
  6. Step 6: Final answer
    x = 31,723.80

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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.