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Finding the Fourth Proportional to 66,515.74, 91,788.87 and 36,300.31

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Solution

The fourth proportional to 66,515.74, 91,788.87 and 36,300.31 is: 50,092.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,515.74 : 91,788.87 = 36,300.31 : x
  2. Step 2: Convert to fraction form
    66,515.74/91,788.87 = 36,300.31/x
  3. Step 3: Cross multiply
    66,515.74x = 91,788.87 × 36,300.31
  4. Step 4: Simplify right side
    66,515.74x = 3,331,964,435.55
  5. Step 5: Solve for x
    x = 3,331,964,435.55/66,515.74
  6. Step 6: Final answer
    x = 50,092.87

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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.