Home / 66,157.66-99,241.98-21,185.58

Finding the Fourth Proportional to 66,157.66, 99,241.98 and 21,185.58

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Solution

The fourth proportional to 66,157.66, 99,241.98 and 21,185.58 is: 31,780.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,157.66 : 99,241.98 = 21,185.58 : x
  2. Step 2: Convert to fraction form
    66,157.66/99,241.98 = 21,185.58/x
  3. Step 3: Cross multiply
    66,157.66x = 99,241.98 × 21,185.58
  4. Step 4: Simplify right side
    66,157.66x = 2,102,499,199.36
  5. Step 5: Solve for x
    x = 2,102,499,199.36/66,157.66
  6. Step 6: Final answer
    x = 31,780.13

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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.