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Finding the Fourth Proportional to 86,818.56, 130,230.56 and 29,891.85

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Solution

The fourth proportional to 86,818.56, 130,230.56 and 29,891.85 is: 44,838.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,818.56 : 130,230.56 = 29,891.85 : x
  2. Step 2: Convert to fraction form
    86,818.56/130,230.56 = 29,891.85/x
  3. Step 3: Cross multiply
    86,818.56x = 130,230.56 × 29,891.85
  4. Step 4: Simplify right side
    86,818.56x = 3,892,832,364.94
  5. Step 5: Solve for x
    x = 3,892,832,364.94/86,818.56
  6. Step 6: Final answer
    x = 44,838.71

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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.