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Finding the Fourth Proportional to 86,726.63, 130,104.78 and 29,797.81

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Solution

The fourth proportional to 86,726.63, 130,104.78 and 29,797.81 is: 44,701.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,726.63 : 130,104.78 = 29,797.81 : x
  2. Step 2: Convert to fraction form
    86,726.63/130,104.78 = 29,797.81/x
  3. Step 3: Cross multiply
    86,726.63x = 130,104.78 × 29,797.81
  4. Step 4: Simplify right side
    86,726.63x = 3,876,837,245.14
  5. Step 5: Solve for x
    x = 3,876,837,245.14/86,726.63
  6. Step 6: Final answer
    x = 44,701.81

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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.