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Finding the Fourth Proportional to 86,720.82, 130,103.62 and 26,747.94

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Solution

The fourth proportional to 86,720.82, 130,103.62 and 26,747.94 is: 40,128.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,720.82 : 130,103.62 = 26,747.94 : x
  2. Step 2: Convert to fraction form
    86,720.82/130,103.62 = 26,747.94/x
  3. Step 3: Cross multiply
    86,720.82x = 130,103.62 × 26,747.94
  4. Step 4: Simplify right side
    86,720.82x = 3,480,004,059.60
  5. Step 5: Solve for x
    x = 3,480,004,059.60/86,720.82
  6. Step 6: Final answer
    x = 40,128.82

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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.