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Finding the Fourth Proportional to 66,113.78, 91,237.17 and 36,307.70

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Solution

The fourth proportional to 66,113.78, 91,237.17 and 36,307.70 is: 50,104.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,113.78 : 91,237.17 = 36,307.70 : x
  2. Step 2: Convert to fraction form
    66,113.78/91,237.17 = 36,307.70/x
  3. Step 3: Cross multiply
    66,113.78x = 91,237.17 × 36,307.70
  4. Step 4: Simplify right side
    66,113.78x = 3,312,611,797.21
  5. Step 5: Solve for x
    x = 3,312,611,797.21/66,113.78
  6. Step 6: Final answer
    x = 50,104.71

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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.