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Finding the Fourth Proportional to 66,609.22, 91,917.99 and 36,395.58

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Solution

The fourth proportional to 66,609.22, 91,917.99 and 36,395.58 is: 50,224.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,609.22 : 91,917.99 = 36,395.58 : x
  2. Step 2: Convert to fraction form
    66,609.22/91,917.99 = 36,395.58/x
  3. Step 3: Cross multiply
    66,609.22x = 91,917.99 × 36,395.58
  4. Step 4: Simplify right side
    66,609.22x = 3,345,408,386.14
  5. Step 5: Solve for x
    x = 3,345,408,386.14/66,609.22
  6. Step 6: Final answer
    x = 50,224.40

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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.