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Finding the Fourth Proportional to 66,256.80, 91,448.64 and 43,597.86

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Solution

The fourth proportional to 66,256.80, 91,448.64 and 43,597.86 is: 60,174.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,256.80 : 91,448.64 = 43,597.86 : x
  2. Step 2: Convert to fraction form
    66,256.80/91,448.64 = 43,597.86/x
  3. Step 3: Cross multiply
    66,256.80x = 91,448.64 × 43,597.86
  4. Step 4: Simplify right side
    66,256.80x = 3,986,965,003.91
  5. Step 5: Solve for x
    x = 3,986,965,003.91/66,256.80
  6. Step 6: Final answer
    x = 60,174.43

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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.