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Finding the Fourth Proportional to 86,795.80, 130,161.30 and 34,194.40

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Solution

The fourth proportional to 86,795.80, 130,161.30 and 34,194.40 is: 51,278.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,795.80 : 130,161.30 = 34,194.40 : x
  2. Step 2: Convert to fraction form
    86,795.80/130,161.30 = 34,194.40/x
  3. Step 3: Cross multiply
    86,795.80x = 130,161.30 × 34,194.40
  4. Step 4: Simplify right side
    86,795.80x = 4,450,787,556.72
  5. Step 5: Solve for x
    x = 4,450,787,556.72/86,795.80
  6. Step 6: Final answer
    x = 51,278.84

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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.