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Finding the Fourth Proportional to 47,879.40, 66,074.22 and 26,659.20

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Solution

The fourth proportional to 47,879.40, 66,074.22 and 26,659.20 is: 36,790.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,879.40 : 66,074.22 = 26,659.20 : x
  2. Step 2: Convert to fraction form
    47,879.40/66,074.22 = 26,659.20/x
  3. Step 3: Cross multiply
    47,879.40x = 66,074.22 × 26,659.20
  4. Step 4: Simplify right side
    47,879.40x = 1,761,485,845.82
  5. Step 5: Solve for x
    x = 1,761,485,845.82/47,879.40
  6. Step 6: Final answer
    x = 36,790.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.