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Finding the Fourth Proportional to 45,615.84, 68,430.31 and 14,028.56

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Solution

The fourth proportional to 45,615.84, 68,430.31 and 14,028.56 is: 21,044.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,615.84 : 68,430.31 = 14,028.56 : x
  2. Step 2: Convert to fraction form
    45,615.84/68,430.31 = 14,028.56/x
  3. Step 3: Cross multiply
    45,615.84x = 68,430.31 × 14,028.56
  4. Step 4: Simplify right side
    45,615.84x = 959,978,589.04
  5. Step 5: Solve for x
    x = 959,978,589.04/45,615.84
  6. Step 6: Final answer
    x = 21,044.85

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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.