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Finding the Fourth Proportional to 73,345.68, 110,020.68 and 20,759.40

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Solution

The fourth proportional to 73,345.68, 110,020.68 and 20,759.40 is: 31,139.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,345.68 : 110,020.68 = 20,759.40 : x
  2. Step 2: Convert to fraction form
    73,345.68/110,020.68 = 20,759.40/x
  3. Step 3: Cross multiply
    73,345.68x = 110,020.68 × 20,759.40
  4. Step 4: Simplify right side
    73,345.68x = 2,283,963,304.39
  5. Step 5: Solve for x
    x = 2,283,963,304.39/73,345.68
  6. Step 6: Final answer
    x = 31,139.71

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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.