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Finding the Fourth Proportional to 66,572.94, 91,871.26 and 37,891.18

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Solution

The fourth proportional to 66,572.94, 91,871.26 and 37,891.18 is: 52,290.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,572.94 : 91,871.26 = 37,891.18 : x
  2. Step 2: Convert to fraction form
    66,572.94/91,871.26 = 37,891.18/x
  3. Step 3: Cross multiply
    66,572.94x = 91,871.26 × 37,891.18
  4. Step 4: Simplify right side
    66,572.94x = 3,481,110,449.49
  5. Step 5: Solve for x
    x = 3,481,110,449.49/66,572.94
  6. Step 6: Final answer
    x = 52,290.17

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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.