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Finding the Fourth Proportional to 66,245.13, 91,417.38 and 36,029.80

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Solution

The fourth proportional to 66,245.13, 91,417.38 and 36,029.80 is: 49,720.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,245.13 : 91,417.38 = 36,029.80 : x
  2. Step 2: Convert to fraction form
    66,245.13/91,417.38 = 36,029.80/x
  3. Step 3: Cross multiply
    66,245.13x = 91,417.38 × 36,029.80
  4. Step 4: Simplify right side
    66,245.13x = 3,293,749,917.92
  5. Step 5: Solve for x
    x = 3,293,749,917.92/66,245.13
  6. Step 6: Final answer
    x = 49,720.63

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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.