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Finding the Fourth Proportional to 86,736.40, 130,104.60 and 53,348.20

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Solution

The fourth proportional to 86,736.40, 130,104.60 and 53,348.20 is: 80,022.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,736.40 : 130,104.60 = 53,348.20 : x
  2. Step 2: Convert to fraction form
    86,736.40/130,104.60 = 53,348.20/x
  3. Step 3: Cross multiply
    86,736.40x = 130,104.60 × 53,348.20
  4. Step 4: Simplify right side
    86,736.40x = 6,940,846,221.72
  5. Step 5: Solve for x
    x = 6,940,846,221.72/86,736.40
  6. Step 6: Final answer
    x = 80,022.30

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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.