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Finding the Fourth Proportional to 66,511.60, 99,767.40 and 41,579.80

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Solution

The fourth proportional to 66,511.60, 99,767.40 and 41,579.80 is: 62,369.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,511.60 : 99,767.40 = 41,579.80 : x
  2. Step 2: Convert to fraction form
    66,511.60/99,767.40 = 41,579.80/x
  3. Step 3: Cross multiply
    66,511.60x = 99,767.40 × 41,579.80
  4. Step 4: Simplify right side
    66,511.60x = 4,148,308,538.52
  5. Step 5: Solve for x
    x = 4,148,308,538.52/66,511.60
  6. Step 6: Final answer
    x = 62,369.70

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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.