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Finding the Fourth Proportional to 66,587.42, 91,890.09 and 36,372.74

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Solution

The fourth proportional to 66,587.42, 91,890.09 and 36,372.74 is: 50,194.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,587.42 : 91,890.09 = 36,372.74 : x
  2. Step 2: Convert to fraction form
    66,587.42/91,890.09 = 36,372.74/x
  3. Step 3: Cross multiply
    66,587.42x = 91,890.09 × 36,372.74
  4. Step 4: Simplify right side
    66,587.42x = 3,342,293,892.70
  5. Step 5: Solve for x
    x = 3,342,293,892.70/66,587.42
  6. Step 6: Final answer
    x = 50,194.07

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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.