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Finding the Fourth Proportional to 66,368.30, 91,588.21 and 36,560.30

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Solution

The fourth proportional to 66,368.30, 91,588.21 and 36,560.30 is: 50,453.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,368.30 : 91,588.21 = 36,560.30 : x
  2. Step 2: Convert to fraction form
    66,368.30/91,588.21 = 36,560.30/x
  3. Step 3: Cross multiply
    66,368.30x = 91,588.21 × 36,560.30
  4. Step 4: Simplify right side
    66,368.30x = 3,348,491,884.72
  5. Step 5: Solve for x
    x = 3,348,491,884.72/66,368.30
  6. Step 6: Final answer
    x = 50,453.19

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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.