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Finding the Fourth Proportional to 79,912, 119,873.76 and 30,664

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Solution

The fourth proportional to 79,912, 119,873.76 and 30,664 is: 45,998.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,912 : 119,873.76 = 30,664 : x
  2. Step 2: Convert to fraction form
    79,912/119,873.76 = 30,664/x
  3. Step 3: Cross multiply
    79,912x = 119,873.76 × 30,664
  4. Step 4: Simplify right side
    79,912x = 3,675,808,976.64
  5. Step 5: Solve for x
    x = 3,675,808,976.64/79,912
  6. Step 6: Final answer
    x = 45,998.21

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.