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Finding the Fourth Proportional to 86,627.66, 129,959.85 and 27,455.54

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Solution

The fourth proportional to 86,627.66, 129,959.85 and 27,455.54 is: 41,189.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,627.66 : 129,959.85 = 27,455.54 : x
  2. Step 2: Convert to fraction form
    86,627.66/129,959.85 = 27,455.54/x
  3. Step 3: Cross multiply
    86,627.66x = 129,959.85 × 27,455.54
  4. Step 4: Simplify right side
    86,627.66x = 3,568,117,860.07
  5. Step 5: Solve for x
    x = 3,568,117,860.07/86,627.66
  6. Step 6: Final answer
    x = 41,189.13

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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.