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Finding the Fourth Proportional to 66,730.32, 100,066.32 and 19,972.26

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Solution

The fourth proportional to 66,730.32, 100,066.32 and 19,972.26 is: 29,949.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,730.32 : 100,066.32 = 19,972.26 : x
  2. Step 2: Convert to fraction form
    66,730.32/100,066.32 = 19,972.26/x
  3. Step 3: Cross multiply
    66,730.32x = 100,066.32 × 19,972.26
  4. Step 4: Simplify right side
    66,730.32x = 1,998,550,560.28
  5. Step 5: Solve for x
    x = 1,998,550,560.28/66,730.32
  6. Step 6: Final answer
    x = 29,949.66

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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.