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Finding the Fourth Proportional to 66,930.63, 100,405.20 and 22,570.08

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Solution

The fourth proportional to 66,930.63, 100,405.20 and 22,570.08 is: 33,858.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,930.63 : 100,405.20 = 22,570.08 : x
  2. Step 2: Convert to fraction form
    66,930.63/100,405.20 = 22,570.08/x
  3. Step 3: Cross multiply
    66,930.63x = 100,405.20 × 22,570.08
  4. Step 4: Simplify right side
    66,930.63x = 2,266,153,396.42
  5. Step 5: Solve for x
    x = 2,266,153,396.42/66,930.63
  6. Step 6: Final answer
    x = 33,858.24

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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.