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Finding the Fourth Proportional to 86,680.92, 130,021.92 and 26,708.66

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Solution

The fourth proportional to 86,680.92, 130,021.92 and 26,708.66 is: 40,063.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,680.92 : 130,021.92 = 26,708.66 : x
  2. Step 2: Convert to fraction form
    86,680.92/130,021.92 = 26,708.66/x
  3. Step 3: Cross multiply
    86,680.92x = 130,021.92 × 26,708.66
  4. Step 4: Simplify right side
    86,680.92x = 3,472,710,603.72
  5. Step 5: Solve for x
    x = 3,472,710,603.72/86,680.92
  6. Step 6: Final answer
    x = 40,063.15

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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.