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Finding the Fourth Proportional to 71,230.30, 106,860.56 and 26,855.98

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Solution

The fourth proportional to 71,230.30, 106,860.56 and 26,855.98 is: 40,289.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,230.30 : 106,860.56 = 26,855.98 : x
  2. Step 2: Convert to fraction form
    71,230.30/106,860.56 = 26,855.98/x
  3. Step 3: Cross multiply
    71,230.30x = 106,860.56 × 26,855.98
  4. Step 4: Simplify right side
    71,230.30x = 2,869,845,062.15
  5. Step 5: Solve for x
    x = 2,869,845,062.15/71,230.30
  6. Step 6: Final answer
    x = 40,289.67

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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.