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Finding the Fourth Proportional to 71,260.80, 106,892.84 and 18,675.60

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Solution

The fourth proportional to 71,260.80, 106,892.84 and 18,675.60 is: 28,013.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,260.80 : 106,892.84 = 18,675.60 : x
  2. Step 2: Convert to fraction form
    71,260.80/106,892.84 = 18,675.60/x
  3. Step 3: Cross multiply
    71,260.80x = 106,892.84 × 18,675.60
  4. Step 4: Simplify right side
    71,260.80x = 1,996,287,922.70
  5. Step 5: Solve for x
    x = 1,996,287,922.70/71,260.80
  6. Step 6: Final answer
    x = 28,013.83

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1.5x scale

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.