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Finding the Fourth Proportional to 70,378.87, 105,555.69 and 34,828.75

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Solution

The fourth proportional to 70,378.87, 105,555.69 and 34,828.75 is: 52,236.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,378.87 : 105,555.69 = 34,828.75 : x
  2. Step 2: Convert to fraction form
    70,378.87/105,555.69 = 34,828.75/x
  3. Step 3: Cross multiply
    70,378.87x = 105,555.69 × 34,828.75
  4. Step 4: Simplify right side
    70,378.87x = 3,676,372,738.09
  5. Step 5: Solve for x
    x = 3,676,372,738.09/70,378.87
  6. Step 6: Final answer
    x = 52,236.88

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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.