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Finding the Fourth Proportional to 66,981, 92,433.78 and 37,173

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Solution

The fourth proportional to 66,981, 92,433.78 and 37,173 is: 51,298.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,981 : 92,433.78 = 37,173 : x
  2. Step 2: Convert to fraction form
    66,981/92,433.78 = 37,173/x
  3. Step 3: Cross multiply
    66,981x = 92,433.78 × 37,173
  4. Step 4: Simplify right side
    66,981x = 3,436,040,903.94
  5. Step 5: Solve for x
    x = 3,436,040,903.94/66,981
  6. Step 6: Final answer
    x = 51,298.74

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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.