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Finding the Fourth Proportional to 45,807.26, 68,702.67 and 20,848.11

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Solution

The fourth proportional to 45,807.26, 68,702.67 and 20,848.11 is: 31,268.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,807.26 : 68,702.67 = 20,848.11 : x
  2. Step 2: Convert to fraction form
    45,807.26/68,702.67 = 20,848.11/x
  3. Step 3: Cross multiply
    45,807.26x = 68,702.67 × 20,848.11
  4. Step 4: Simplify right side
    45,807.26x = 1,432,320,821.45
  5. Step 5: Solve for x
    x = 1,432,320,821.45/45,807.26
  6. Step 6: Final answer
    x = 31,268.42

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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.