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Finding the Fourth Proportional to 66,848.76, 100,274.76 and 20,101.68

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Solution

The fourth proportional to 66,848.76, 100,274.76 and 20,101.68 is: 30,153.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,848.76 : 100,274.76 = 20,101.68 : x
  2. Step 2: Convert to fraction form
    66,848.76/100,274.76 = 20,101.68/x
  3. Step 3: Cross multiply
    66,848.76x = 100,274.76 × 20,101.68
  4. Step 4: Simplify right side
    66,848.76x = 2,015,691,137.60
  5. Step 5: Solve for x
    x = 2,015,691,137.60/66,848.76
  6. Step 6: Final answer
    x = 30,153.01

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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.