Home / 86,628.08-129,958.50-27,478.64

Finding the Fourth Proportional to 86,628.08, 129,958.50 and 27,478.64

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Solution

The fourth proportional to 86,628.08, 129,958.50 and 27,478.64 is: 41,223.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,628.08 : 129,958.50 = 27,478.64 : x
  2. Step 2: Convert to fraction form
    86,628.08/129,958.50 = 27,478.64/x
  3. Step 3: Cross multiply
    86,628.08x = 129,958.50 × 27,478.64
  4. Step 4: Simplify right side
    86,628.08x = 3,571,082,836.44
  5. Step 5: Solve for x
    x = 3,571,082,836.44/86,628.08
  6. Step 6: Final answer
    x = 41,223.16

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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.