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Finding the Fourth Proportional to 66,157.58, 99,014.60 and 54,310.70

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Solution

The fourth proportional to 66,157.58, 99,014.60 and 54,310.70 is: 81,283.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,157.58 : 99,014.60 = 54,310.70 : x
  2. Step 2: Convert to fraction form
    66,157.58/99,014.60 = 54,310.70/x
  3. Step 3: Cross multiply
    66,157.58x = 99,014.60 × 54,310.70
  4. Step 4: Simplify right side
    66,157.58x = 5,377,552,236.22
  5. Step 5: Solve for x
    x = 5,377,552,236.22/66,157.58
  6. Step 6: Final answer
    x = 81,283.99

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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.