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Finding the Fourth Proportional to 66,073.60, 91,181.64 and 37,779.94

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Solution

The fourth proportional to 66,073.60, 91,181.64 and 37,779.94 is: 52,136.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,073.60 : 91,181.64 = 37,779.94 : x
  2. Step 2: Convert to fraction form
    66,073.60/91,181.64 = 37,779.94/x
  3. Step 3: Cross multiply
    66,073.60x = 91,181.64 × 37,779.94
  4. Step 4: Simplify right side
    66,073.60x = 3,444,836,888.30
  5. Step 5: Solve for x
    x = 3,444,836,888.30/66,073.60
  6. Step 6: Final answer
    x = 52,136.36

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Why These Related Problems?

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