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Finding the Fourth Proportional to 66,908.25, 100,401.26 and 29,972.25

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Solution

The fourth proportional to 66,908.25, 100,401.26 and 29,972.25 is: 44,975.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,908.25 : 100,401.26 = 29,972.25 : x
  2. Step 2: Convert to fraction form
    66,908.25/100,401.26 = 29,972.25/x
  3. Step 3: Cross multiply
    66,908.25x = 100,401.26 × 29,972.25
  4. Step 4: Simplify right side
    66,908.25x = 3,009,251,515.17
  5. Step 5: Solve for x
    x = 3,009,251,515.17/66,908.25
  6. Step 6: Final answer
    x = 44,975.79

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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.