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Finding the Fourth Proportional to 67,266.74, 100,900.05 and 31,719.77

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Solution

The fourth proportional to 67,266.74, 100,900.05 and 31,719.77 is: 47,579.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,266.74 : 100,900.05 = 31,719.77 : x
  2. Step 2: Convert to fraction form
    67,266.74/100,900.05 = 31,719.77/x
  3. Step 3: Cross multiply
    67,266.74x = 100,900.05 × 31,719.77
  4. Step 4: Simplify right side
    67,266.74x = 3,200,526,378.99
  5. Step 5: Solve for x
    x = 3,200,526,378.99/67,266.74
  6. Step 6: Final answer
    x = 47,579.63

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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.