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Finding the Fourth Proportional to 66,383.20, 99,574.80 and 17,135.20

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Solution

The fourth proportional to 66,383.20, 99,574.80 and 17,135.20 is: 25,702.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,383.20 : 99,574.80 = 17,135.20 : x
  2. Step 2: Convert to fraction form
    66,383.20/99,574.80 = 17,135.20/x
  3. Step 3: Cross multiply
    66,383.20x = 99,574.80 × 17,135.20
  4. Step 4: Simplify right side
    66,383.20x = 1,706,234,112.96
  5. Step 5: Solve for x
    x = 1,706,234,112.96/66,383.20
  6. Step 6: Final answer
    x = 25,702.80

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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.