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Finding the Fourth Proportional to 61,206.32, 91,754.08 and 21,754.20

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Solution

The fourth proportional to 61,206.32, 91,754.08 and 21,754.20 is: 32,611.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,206.32 : 91,754.08 = 21,754.20 : x
  2. Step 2: Convert to fraction form
    61,206.32/91,754.08 = 21,754.20/x
  3. Step 3: Cross multiply
    61,206.32x = 91,754.08 × 21,754.20
  4. Step 4: Simplify right side
    61,206.32x = 1,996,036,896.83
  5. Step 5: Solve for x
    x = 1,996,036,896.83/61,206.32
  6. Step 6: Final answer
    x = 32,611.61

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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.