Home / 66,517.60-99,776.40-22,145.80

Finding the Fourth Proportional to 66,517.60, 99,776.40 and 22,145.80

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Solution

The fourth proportional to 66,517.60, 99,776.40 and 22,145.80 is: 33,218.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,517.60 : 99,776.40 = 22,145.80 : x
  2. Step 2: Convert to fraction form
    66,517.60/99,776.40 = 22,145.80/x
  3. Step 3: Cross multiply
    66,517.60x = 99,776.40 × 22,145.80
  4. Step 4: Simplify right side
    66,517.60x = 2,209,628,199.12
  5. Step 5: Solve for x
    x = 2,209,628,199.12/66,517.60
  6. Step 6: Final answer
    x = 33,218.70

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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.