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Finding the Fourth Proportional to 71,800.45, 107,692.47 and 19,214.02

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Solution

The fourth proportional to 71,800.45, 107,692.47 and 19,214.02 is: 28,818.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,800.45 : 107,692.47 = 19,214.02 : x
  2. Step 2: Convert to fraction form
    71,800.45/107,692.47 = 19,214.02/x
  3. Step 3: Cross multiply
    71,800.45x = 107,692.47 × 19,214.02
  4. Step 4: Simplify right side
    71,800.45x = 2,069,205,272.43
  5. Step 5: Solve for x
    x = 2,069,205,272.43/71,800.45
  6. Step 6: Final answer
    x = 28,818.83

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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.