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Finding the Fourth Proportional to 35,611.20, 53,416.80 and 17,179.20

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Solution

The fourth proportional to 35,611.20, 53,416.80 and 17,179.20 is: 25,768.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,611.20 : 53,416.80 = 17,179.20 : x
  2. Step 2: Convert to fraction form
    35,611.20/53,416.80 = 17,179.20/x
  3. Step 3: Cross multiply
    35,611.20x = 53,416.80 × 17,179.20
  4. Step 4: Simplify right side
    35,611.20x = 917,657,890.56
  5. Step 5: Solve for x
    x = 917,657,890.56/35,611.20
  6. Step 6: Final answer
    x = 25,768.80

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.