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Finding the Fourth Proportional to 66,203.60, 99,305.40 and 61,343.60

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Solution

The fourth proportional to 66,203.60, 99,305.40 and 61,343.60 is: 92,015.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,203.60 : 99,305.40 = 61,343.60 : x
  2. Step 2: Convert to fraction form
    66,203.60/99,305.40 = 61,343.60/x
  3. Step 3: Cross multiply
    66,203.60x = 99,305.40 × 61,343.60
  4. Step 4: Simplify right side
    66,203.60x = 6,091,750,735.44
  5. Step 5: Solve for x
    x = 6,091,750,735.44/66,203.60
  6. Step 6: Final answer
    x = 92,015.40

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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.