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Finding the Fourth Proportional to 86,829, 130,260.42 and 36,908.52

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Solution

The fourth proportional to 86,829, 130,260.42 and 36,908.52 is: 55,369.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,829 : 130,260.42 = 36,908.52 : x
  2. Step 2: Convert to fraction form
    86,829/130,260.42 = 36,908.52/x
  3. Step 3: Cross multiply
    86,829x = 130,260.42 × 36,908.52
  4. Step 4: Simplify right side
    86,829x = 4,807,719,316.78
  5. Step 5: Solve for x
    x = 4,807,719,316.78/86,829
  6. Step 6: Final answer
    x = 55,369.97

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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.