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Finding the Fourth Proportional to 66,398.57, 91,627.14 and 37,718.16

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Solution

The fourth proportional to 66,398.57, 91,627.14 and 37,718.16 is: 52,049.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,398.57 : 91,627.14 = 37,718.16 : x
  2. Step 2: Convert to fraction form
    66,398.57/91,627.14 = 37,718.16/x
  3. Step 3: Cross multiply
    66,398.57x = 91,627.14 × 37,718.16
  4. Step 4: Simplify right side
    66,398.57x = 3,456,007,126.86
  5. Step 5: Solve for x
    x = 3,456,007,126.86/66,398.57
  6. Step 6: Final answer
    x = 52,049.42

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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.