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Finding the Fourth Proportional to 66,757.84, 100,129.08 and 17,513.68

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Solution

The fourth proportional to 66,757.84, 100,129.08 and 17,513.68 is: 26,268.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,757.84 : 100,129.08 = 17,513.68 : x
  2. Step 2: Convert to fraction form
    66,757.84/100,129.08 = 17,513.68/x
  3. Step 3: Cross multiply
    66,757.84x = 100,129.08 × 17,513.68
  4. Step 4: Simplify right side
    66,757.84x = 1,753,628,665.81
  5. Step 5: Solve for x
    x = 1,753,628,665.81/66,757.84
  6. Step 6: Final answer
    x = 26,268.51

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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.