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Finding the Fourth Proportional to 66,255.66, 91,434.48 and 36,042.68

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Solution

The fourth proportional to 66,255.66, 91,434.48 and 36,042.68 is: 49,739.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,255.66 : 91,434.48 = 36,042.68 : x
  2. Step 2: Convert to fraction form
    66,255.66/91,434.48 = 36,042.68/x
  3. Step 3: Cross multiply
    66,255.66x = 91,434.48 × 36,042.68
  4. Step 4: Simplify right side
    66,255.66x = 3,295,543,703.61
  5. Step 5: Solve for x
    x = 3,295,543,703.61/66,255.66
  6. Step 6: Final answer
    x = 49,739.81

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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.