Home / 77,640.19-107,142.82-43,648.83

Finding the Fourth Proportional to 77,640.19, 107,142.82 and 43,648.83

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Solution

The fourth proportional to 77,640.19, 107,142.82 and 43,648.83 is: 60,235.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,640.19 : 107,142.82 = 43,648.83 : x
  2. Step 2: Convert to fraction form
    77,640.19/107,142.82 = 43,648.83/x
  3. Step 3: Cross multiply
    77,640.19x = 107,142.82 × 43,648.83
  4. Step 4: Simplify right side
    77,640.19x = 4,676,659,073.20
  5. Step 5: Solve for x
    x = 4,676,659,073.20/77,640.19
  6. Step 6: Final answer
    x = 60,235.03

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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.