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Finding the Fourth Proportional to 66,073.47, 91,181.44 and 35,858.78

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Solution

The fourth proportional to 66,073.47, 91,181.44 and 35,858.78 is: 49,485.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,073.47 : 91,181.44 = 35,858.78 : x
  2. Step 2: Convert to fraction form
    66,073.47/91,181.44 = 35,858.78/x
  3. Step 3: Cross multiply
    66,073.47x = 91,181.44 × 35,858.78
  4. Step 4: Simplify right side
    66,073.47x = 3,269,655,245.70
  5. Step 5: Solve for x
    x = 3,269,655,245.70/66,073.47
  6. Step 6: Final answer
    x = 49,485.15

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1.5x scale

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.