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Finding the Fourth Proportional to 70,231.80, 105,405.30 and 67,927.80

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Solution

The fourth proportional to 70,231.80, 105,405.30 and 67,927.80 is: 101,947.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,231.80 : 105,405.30 = 67,927.80 : x
  2. Step 2: Convert to fraction form
    70,231.80/105,405.30 = 67,927.80/x
  3. Step 3: Cross multiply
    70,231.80x = 105,405.30 × 67,927.80
  4. Step 4: Simplify right side
    70,231.80x = 7,159,950,137.34
  5. Step 5: Solve for x
    x = 7,159,950,137.34/70,231.80
  6. Step 6: Final answer
    x = 101,947.41

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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.