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Finding the Fourth Proportional to 66,758.74, 100,130.43 and 16,839.29

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Solution

The fourth proportional to 66,758.74, 100,130.43 and 16,839.29 is: 25,257.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,758.74 : 100,130.43 = 16,839.29 : x
  2. Step 2: Convert to fraction form
    66,758.74/100,130.43 = 16,839.29/x
  3. Step 3: Cross multiply
    66,758.74x = 100,130.43 × 16,839.29
  4. Step 4: Simplify right side
    66,758.74x = 1,686,125,567.35
  5. Step 5: Solve for x
    x = 1,686,125,567.35/66,758.74
  6. Step 6: Final answer
    x = 25,257.00

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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.