Home / 66,126.78-99,190.98-19,380.60

Finding the Fourth Proportional to 66,126.78, 99,190.98 and 19,380.60

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Solution

The fourth proportional to 66,126.78, 99,190.98 and 19,380.60 is: 29,071.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,126.78 : 99,190.98 = 19,380.60 : x
  2. Step 2: Convert to fraction form
    66,126.78/99,190.98 = 19,380.60/x
  3. Step 3: Cross multiply
    66,126.78x = 99,190.98 × 19,380.60
  4. Step 4: Simplify right side
    66,126.78x = 1,922,380,706.99
  5. Step 5: Solve for x
    x = 1,922,380,706.99/66,126.78
  6. Step 6: Final answer
    x = 29,071.14

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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.