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Finding the Fourth Proportional to 70,247.98, 105,372.06 and 28,694.98

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Solution

The fourth proportional to 70,247.98, 105,372.06 and 28,694.98 is: 43,042.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,247.98 : 105,372.06 = 28,694.98 : x
  2. Step 2: Convert to fraction form
    70,247.98/105,372.06 = 28,694.98/x
  3. Step 3: Cross multiply
    70,247.98x = 105,372.06 × 28,694.98
  4. Step 4: Simplify right side
    70,247.98x = 3,023,649,154.26
  5. Step 5: Solve for x
    x = 3,023,649,154.26/70,247.98
  6. Step 6: Final answer
    x = 43,042.51

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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.