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Finding the Fourth Proportional to 56,843.19, 85,216.19 and 21,807.99

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Solution

The fourth proportional to 56,843.19, 85,216.19 and 21,807.99 is: 32,693.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,843.19 : 85,216.19 = 21,807.99 : x
  2. Step 2: Convert to fraction form
    56,843.19/85,216.19 = 21,807.99/x
  3. Step 3: Cross multiply
    56,843.19x = 85,216.19 × 21,807.99
  4. Step 4: Simplify right side
    56,843.19x = 1,858,393,710.32
  5. Step 5: Solve for x
    x = 1,858,393,710.32/56,843.19
  6. Step 6: Final answer
    x = 32,693.34

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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.