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Finding the Fourth Proportional to 86,052, 118,744.70 and 47,812.70

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Solution

The fourth proportional to 86,052, 118,744.70 and 47,812.70 is: 65,977.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,052 : 118,744.70 = 47,812.70 : x
  2. Step 2: Convert to fraction form
    86,052/118,744.70 = 47,812.70/x
  3. Step 3: Cross multiply
    86,052x = 118,744.70 × 47,812.70
  4. Step 4: Simplify right side
    86,052x = 5,677,504,717.69
  5. Step 5: Solve for x
    x = 5,677,504,717.69/86,052
  6. Step 6: Final answer
    x = 65,977.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.