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Finding the Fourth Proportional to 70,208.91, 105,220.22 and 30,723.03

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Solution

The fourth proportional to 70,208.91, 105,220.22 and 30,723.03 is: 46,043.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,208.91 : 105,220.22 = 30,723.03 : x
  2. Step 2: Convert to fraction form
    70,208.91/105,220.22 = 30,723.03/x
  3. Step 3: Cross multiply
    70,208.91x = 105,220.22 × 30,723.03
  4. Step 4: Simplify right side
    70,208.91x = 3,232,683,822.05
  5. Step 5: Solve for x
    x = 3,232,683,822.05/70,208.91
  6. Step 6: Final answer
    x = 46,043.78

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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.