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Finding the Fourth Proportional to 86,682.70, 130,012.89 and 27,519.04

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Solution

The fourth proportional to 86,682.70, 130,012.89 and 27,519.04 is: 41,275.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,682.70 : 130,012.89 = 27,519.04 : x
  2. Step 2: Convert to fraction form
    86,682.70/130,012.89 = 27,519.04/x
  3. Step 3: Cross multiply
    86,682.70x = 130,012.89 × 27,519.04
  4. Step 4: Simplify right side
    86,682.70x = 3,577,829,920.43
  5. Step 5: Solve for x
    x = 3,577,829,920.43/86,682.70
  6. Step 6: Final answer
    x = 41,275.02

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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.