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Finding the Fourth Proportional to 70,189.44, 105,357.06 and 40,664.94

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Solution

The fourth proportional to 70,189.44, 105,357.06 and 40,664.94 is: 61,039.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,189.44 : 105,357.06 = 40,664.94 : x
  2. Step 2: Convert to fraction form
    70,189.44/105,357.06 = 40,664.94/x
  3. Step 3: Cross multiply
    70,189.44x = 105,357.06 × 40,664.94
  4. Step 4: Simplify right side
    70,189.44x = 4,284,338,523.48
  5. Step 5: Solve for x
    x = 4,284,338,523.48/70,189.44
  6. Step 6: Final answer
    x = 61,039.65

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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.