Home / 77,811.35-107,378.25-43,819.70

Finding the Fourth Proportional to 77,811.35, 107,378.25 and 43,819.70

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Solution

The fourth proportional to 77,811.35, 107,378.25 and 43,819.70 is: 60,470.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,811.35 : 107,378.25 = 43,819.70 : x
  2. Step 2: Convert to fraction form
    77,811.35/107,378.25 = 43,819.70/x
  3. Step 3: Cross multiply
    77,811.35x = 107,378.25 × 43,819.70
  4. Step 4: Simplify right side
    77,811.35x = 4,705,282,701.53
  5. Step 5: Solve for x
    x = 4,705,282,701.53/77,811.35
  6. Step 6: Final answer
    x = 60,470.39

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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.