Home / 86,629.08-129,960-27,479.64

Finding the Fourth Proportional to 86,629.08, 129,960 and 27,479.64

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Solution

The fourth proportional to 86,629.08, 129,960 and 27,479.64 is: 41,224.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,629.08 : 129,960 = 27,479.64 : x
  2. Step 2: Convert to fraction form
    86,629.08/129,960 = 27,479.64/x
  3. Step 3: Cross multiply
    86,629.08x = 129,960 × 27,479.64
  4. Step 4: Simplify right side
    86,629.08x = 3,571,254,014.40
  5. Step 5: Solve for x
    x = 3,571,254,014.40/86,629.08
  6. Step 6: Final answer
    x = 41,224.66

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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.