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Finding the Fourth Proportional to 75,752.82, 104,477.55 and 66,658.55

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Solution

The fourth proportional to 75,752.82, 104,477.55 and 66,658.55 is: 91,934.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,752.82 : 104,477.55 = 66,658.55 : x
  2. Step 2: Convert to fraction form
    75,752.82/104,477.55 = 66,658.55/x
  3. Step 3: Cross multiply
    75,752.82x = 104,477.55 × 66,658.55
  4. Step 4: Simplify right side
    75,752.82x = 6,964,321,218.20
  5. Step 5: Solve for x
    x = 6,964,321,218.20/75,752.82
  6. Step 6: Final answer
    x = 91,934.81

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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.