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Finding the Fourth Proportional to 73,869.93, 110,805.03 and 21,283.65

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Solution

The fourth proportional to 73,869.93, 110,805.03 and 21,283.65 is: 31,925.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,869.93 : 110,805.03 = 21,283.65 : x
  2. Step 2: Convert to fraction form
    73,869.93/110,805.03 = 21,283.65/x
  3. Step 3: Cross multiply
    73,869.93x = 110,805.03 × 21,283.65
  4. Step 4: Simplify right side
    73,869.93x = 2,358,335,476.76
  5. Step 5: Solve for x
    x = 2,358,335,476.76/73,869.93
  6. Step 6: Final answer
    x = 31,925.51

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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.