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Finding the Fourth Proportional to 70,072.43, 105,141.44 and 30,624.41

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Solution

The fourth proportional to 70,072.43, 105,141.44 and 30,624.41 is: 45,950.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,072.43 : 105,141.44 = 30,624.41 : x
  2. Step 2: Convert to fraction form
    70,072.43/105,141.44 = 30,624.41/x
  3. Step 3: Cross multiply
    70,072.43x = 105,141.44 × 30,624.41
  4. Step 4: Simplify right side
    70,072.43x = 3,219,894,905.97
  5. Step 5: Solve for x
    x = 3,219,894,905.97/70,072.43
  6. Step 6: Final answer
    x = 45,950.96

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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.