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Finding the Fourth Proportional to 66,812.88, 100,215.80 and 22,440.54

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Solution

The fourth proportional to 66,812.88, 100,215.80 and 22,440.54 is: 33,659.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,812.88 : 100,215.80 = 22,440.54 : x
  2. Step 2: Convert to fraction form
    66,812.88/100,215.80 = 22,440.54/x
  3. Step 3: Cross multiply
    66,812.88x = 100,215.80 × 22,440.54
  4. Step 4: Simplify right side
    66,812.88x = 2,248,896,668.53
  5. Step 5: Solve for x
    x = 2,248,896,668.53/66,812.88
  6. Step 6: Final answer
    x = 33,659.63

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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.