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Finding the Fourth Proportional to 45,266, 67,900.84 and 21,561.36

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Solution

The fourth proportional to 45,266, 67,900.84 and 21,561.36 is: 32,342.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,266 : 67,900.84 = 21,561.36 : x
  2. Step 2: Convert to fraction form
    45,266/67,900.84 = 21,561.36/x
  3. Step 3: Cross multiply
    45,266x = 67,900.84 × 21,561.36
  4. Step 4: Simplify right side
    45,266x = 1,464,034,455.54
  5. Step 5: Solve for x
    x = 1,464,034,455.54/45,266
  6. Step 6: Final answer
    x = 32,342.92

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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.