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Finding the Fourth Proportional to 66,849.97, 100,275.13 and 16,930.07

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Solution

The fourth proportional to 66,849.97, 100,275.13 and 16,930.07 is: 25,395.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,849.97 : 100,275.13 = 16,930.07 : x
  2. Step 2: Convert to fraction form
    66,849.97/100,275.13 = 16,930.07/x
  3. Step 3: Cross multiply
    66,849.97x = 100,275.13 × 16,930.07
  4. Step 4: Simplify right side
    66,849.97x = 1,697,664,885.51
  5. Step 5: Solve for x
    x = 1,697,664,885.51/66,849.97
  6. Step 6: Final answer
    x = 25,395.15

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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.