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Finding the Fourth Proportional to 79,313.78, 118,812.05 and 47,706.39

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Solution

The fourth proportional to 79,313.78, 118,812.05 and 47,706.39 is: 71,464.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,313.78 : 118,812.05 = 47,706.39 : x
  2. Step 2: Convert to fraction form
    79,313.78/118,812.05 = 47,706.39/x
  3. Step 3: Cross multiply
    79,313.78x = 118,812.05 × 47,706.39
  4. Step 4: Simplify right side
    79,313.78x = 5,668,093,994.00
  5. Step 5: Solve for x
    x = 5,668,093,994.00/79,313.78
  6. Step 6: Final answer
    x = 71,464.18

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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.