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Finding the Fourth Proportional to 66,389.94, 91,616.94 and 36,175.47

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Solution

The fourth proportional to 66,389.94, 91,616.94 and 36,175.47 is: 49,921.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,389.94 : 91,616.94 = 36,175.47 : x
  2. Step 2: Convert to fraction form
    66,389.94/91,616.94 = 36,175.47/x
  3. Step 3: Cross multiply
    66,389.94x = 91,616.94 × 36,175.47
  4. Step 4: Simplify right side
    66,389.94x = 3,314,285,864.46
  5. Step 5: Solve for x
    x = 3,314,285,864.46/66,389.94
  6. Step 6: Final answer
    x = 49,921.51

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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.