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Finding the Fourth Proportional to 66,853.40, 100,280.25 and 16,933.50

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Solution

The fourth proportional to 66,853.40, 100,280.25 and 16,933.50 is: 25,400.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,853.40 : 100,280.25 = 16,933.50 : x
  2. Step 2: Convert to fraction form
    66,853.40/100,280.25 = 16,933.50/x
  3. Step 3: Cross multiply
    66,853.40x = 100,280.25 × 16,933.50
  4. Step 4: Simplify right side
    66,853.40x = 1,698,095,613.38
  5. Step 5: Solve for x
    x = 1,698,095,613.38/66,853.40
  6. Step 6: Final answer
    x = 25,400.29

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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.