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Finding the Fourth Proportional to 66,889.47, 100,344.59 and 22,512.76

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Solution

The fourth proportional to 66,889.47, 100,344.59 and 22,512.76 is: 33,772.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,889.47 : 100,344.59 = 22,512.76 : x
  2. Step 2: Convert to fraction form
    66,889.47/100,344.59 = 22,512.76/x
  3. Step 3: Cross multiply
    66,889.47x = 100,344.59 × 22,512.76
  4. Step 4: Simplify right side
    66,889.47x = 2,259,033,671.97
  5. Step 5: Solve for x
    x = 2,259,033,671.97/66,889.47
  6. Step 6: Final answer
    x = 33,772.64

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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.