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Finding the Fourth Proportional to 66,190.60, 91,344.76 and 37,905.40

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Solution

The fourth proportional to 66,190.60, 91,344.76 and 37,905.40 is: 52,310.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,190.60 : 91,344.76 = 37,905.40 : x
  2. Step 2: Convert to fraction form
    66,190.60/91,344.76 = 37,905.40/x
  3. Step 3: Cross multiply
    66,190.60x = 91,344.76 × 37,905.40
  4. Step 4: Simplify right side
    66,190.60x = 3,462,459,665.70
  5. Step 5: Solve for x
    x = 3,462,459,665.70/66,190.60
  6. Step 6: Final answer
    x = 52,310.44

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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.