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Finding the Fourth Proportional to 45,200.70, 67,811.85 and 21,807.90

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Solution

The fourth proportional to 45,200.70, 67,811.85 and 21,807.90 is: 32,717.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,200.70 : 67,811.85 = 21,807.90 : x
  2. Step 2: Convert to fraction form
    45,200.70/67,811.85 = 21,807.90/x
  3. Step 3: Cross multiply
    45,200.70x = 67,811.85 × 21,807.90
  4. Step 4: Simplify right side
    45,200.70x = 1,478,834,043.62
  5. Step 5: Solve for x
    x = 1,478,834,043.62/45,200.70
  6. Step 6: Final answer
    x = 32,717.06

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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.