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Finding the Fourth Proportional to 66,706.79, 100,052.79 and 16,786.90

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Solution

The fourth proportional to 66,706.79, 100,052.79 and 16,786.90 is: 25,178.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,706.79 : 100,052.79 = 16,786.90 : x
  2. Step 2: Convert to fraction form
    66,706.79/100,052.79 = 16,786.90/x
  3. Step 3: Cross multiply
    66,706.79x = 100,052.79 × 16,786.90
  4. Step 4: Simplify right side
    66,706.79x = 1,679,576,180.45
  5. Step 5: Solve for x
    x = 1,679,576,180.45/66,706.79
  6. Step 6: Final answer
    x = 25,178.49

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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.