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Finding the Fourth Proportional to 66,932.53, 100,408.19 and 19,551.09

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Solution

The fourth proportional to 66,932.53, 100,408.19 and 19,551.09 is: 29,329.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,932.53 : 100,408.19 = 19,551.09 : x
  2. Step 2: Convert to fraction form
    66,932.53/100,408.19 = 19,551.09/x
  3. Step 3: Cross multiply
    66,932.53x = 100,408.19 × 19,551.09
  4. Step 4: Simplify right side
    66,932.53x = 1,963,089,838.20
  5. Step 5: Solve for x
    x = 1,963,089,838.20/66,932.53
  6. Step 6: Final answer
    x = 29,329.38

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1.5x scale

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.