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Finding the Fourth Proportional to 66,412.89, 91,649.21 and 36,198.22

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Solution

The fourth proportional to 66,412.89, 91,649.21 and 36,198.22 is: 49,953.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,412.89 : 91,649.21 = 36,198.22 : x
  2. Step 2: Convert to fraction form
    66,412.89/91,649.21 = 36,198.22/x
  3. Step 3: Cross multiply
    66,412.89x = 91,649.21 × 36,198.22
  4. Step 4: Simplify right side
    66,412.89x = 3,317,537,856.29
  5. Step 5: Solve for x
    x = 3,317,537,856.29/66,412.89
  6. Step 6: Final answer
    x = 49,953.22

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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.