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Finding the Fourth Proportional to 45,702.80, 68,528.72 and 14,103.90

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Solution

The fourth proportional to 45,702.80, 68,528.72 and 14,103.90 is: 21,147.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,702.80 : 68,528.72 = 14,103.90 : x
  2. Step 2: Convert to fraction form
    45,702.80/68,528.72 = 14,103.90/x
  3. Step 3: Cross multiply
    45,702.80x = 68,528.72 × 14,103.90
  4. Step 4: Simplify right side
    45,702.80x = 966,522,214.01
  5. Step 5: Solve for x
    x = 966,522,214.01/45,702.80
  6. Step 6: Final answer
    x = 21,147.99

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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.