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Finding the Fourth Proportional to 86,636.38, 129,959.16 and 27,476.68

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Solution

The fourth proportional to 86,636.38, 129,959.16 and 27,476.68 is: 41,216.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,636.38 : 129,959.16 = 27,476.68 : x
  2. Step 2: Convert to fraction form
    86,636.38/129,959.16 = 27,476.68/x
  3. Step 3: Cross multiply
    86,636.38x = 129,959.16 × 27,476.68
  4. Step 4: Simplify right side
    86,636.38x = 3,570,846,252.39
  5. Step 5: Solve for x
    x = 3,570,846,252.39/86,636.38
  6. Step 6: Final answer
    x = 41,216.48

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1.5x scale

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.