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Finding the Fourth Proportional to 35,188.80, 52,759.40 and 18,531.20

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Solution

The fourth proportional to 35,188.80, 52,759.40 and 18,531.20 is: 27,784.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,188.80 : 52,759.40 = 18,531.20 : x
  2. Step 2: Convert to fraction form
    35,188.80/52,759.40 = 18,531.20/x
  3. Step 3: Cross multiply
    35,188.80x = 52,759.40 × 18,531.20
  4. Step 4: Simplify right side
    35,188.80x = 977,694,993.28
  5. Step 5: Solve for x
    x = 977,694,993.28/35,188.80
  6. Step 6: Final answer
    x = 27,784.27

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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.