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Finding the Fourth Proportional to 66,207.48, 91,355.74 and 43,555.62

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Solution

The fourth proportional to 66,207.48, 91,355.74 and 43,555.62 is: 60,099.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,207.48 : 91,355.74 = 43,555.62 : x
  2. Step 2: Convert to fraction form
    66,207.48/91,355.74 = 43,555.62/x
  3. Step 3: Cross multiply
    66,207.48x = 91,355.74 × 43,555.62
  4. Step 4: Simplify right side
    66,207.48x = 3,979,055,896.26
  5. Step 5: Solve for x
    x = 3,979,055,896.26/66,207.48
  6. Step 6: Final answer
    x = 60,099.79

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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.