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Finding the Fourth Proportional to 86,643, 129,944.52 and 27,467.64

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Solution

The fourth proportional to 86,643, 129,944.52 and 27,467.64 is: 41,195.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,643 : 129,944.52 = 27,467.64 : x
  2. Step 2: Convert to fraction form
    86,643/129,944.52 = 27,467.64/x
  3. Step 3: Cross multiply
    86,643x = 129,944.52 × 27,467.64
  4. Step 4: Simplify right side
    86,643x = 3,569,269,295.33
  5. Step 5: Solve for x
    x = 3,569,269,295.33/86,643
  6. Step 6: Final answer
    x = 41,195.13

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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.