Home / 77,640.14-107,142.74-43,648.77

Finding the Fourth Proportional to 77,640.14, 107,142.74 and 43,648.77

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Solution

The fourth proportional to 77,640.14, 107,142.74 and 43,648.77 is: 60,234.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,640.14 : 107,142.74 = 43,648.77 : x
  2. Step 2: Convert to fraction form
    77,640.14/107,142.74 = 43,648.77/x
  3. Step 3: Cross multiply
    77,640.14x = 107,142.74 × 43,648.77
  4. Step 4: Simplify right side
    77,640.14x = 4,676,649,408.18
  5. Step 5: Solve for x
    x = 4,676,649,408.18/77,640.14
  6. Step 6: Final answer
    x = 60,234.95

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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.