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Finding the Fourth Proportional to 66,543.60, 91,845.60 and 43,886.64

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Solution

The fourth proportional to 66,543.60, 91,845.60 and 43,886.64 is: 60,573.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,543.60 : 91,845.60 = 43,886.64 : x
  2. Step 2: Convert to fraction form
    66,543.60/91,845.60 = 43,886.64/x
  3. Step 3: Cross multiply
    66,543.60x = 91,845.60 × 43,886.64
  4. Step 4: Simplify right side
    66,543.60x = 4,030,794,782.78
  5. Step 5: Solve for x
    x = 4,030,794,782.78/66,543.60
  6. Step 6: Final answer
    x = 60,573.74

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.