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Finding the Fourth Proportional to 66,314.26, 99,486.36 and 21,940.90

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Solution

The fourth proportional to 66,314.26, 99,486.36 and 21,940.90 is: 32,916.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,314.26 : 99,486.36 = 21,940.90 : x
  2. Step 2: Convert to fraction form
    66,314.26/99,486.36 = 21,940.90/x
  3. Step 3: Cross multiply
    66,314.26x = 99,486.36 × 21,940.90
  4. Step 4: Simplify right side
    66,314.26x = 2,182,820,276.12
  5. Step 5: Solve for x
    x = 2,182,820,276.12/66,314.26
  6. Step 6: Final answer
    x = 32,916.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.