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Finding the Fourth Proportional to 86,302.86, 129,267.36 and 41,836.61

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Solution

The fourth proportional to 86,302.86, 129,267.36 and 41,836.61 is: 62,664.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,302.86 : 129,267.36 = 41,836.61 : x
  2. Step 2: Convert to fraction form
    86,302.86/129,267.36 = 41,836.61/x
  3. Step 3: Cross multiply
    86,302.86x = 129,267.36 × 41,836.61
  4. Step 4: Simplify right side
    86,302.86x = 5,408,107,479.71
  5. Step 5: Solve for x
    x = 5,408,107,479.71/86,302.86
  6. Step 6: Final answer
    x = 62,664.29

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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.