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Finding the Fourth Proportional to 66,287.66, 91,477.92 and 36,073.84

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Solution

The fourth proportional to 66,287.66, 91,477.92 and 36,073.84 is: 49,782.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,287.66 : 91,477.92 = 36,073.84 : x
  2. Step 2: Convert to fraction form
    66,287.66/91,477.92 = 36,073.84/x
  3. Step 3: Cross multiply
    66,287.66x = 91,477.92 × 36,073.84
  4. Step 4: Simplify right side
    66,287.66x = 3,299,959,849.61
  5. Step 5: Solve for x
    x = 3,299,959,849.61/66,287.66
  6. Step 6: Final answer
    x = 49,782.42

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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.