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Finding the Fourth Proportional to 30,108.41, 45,138.51 and 14,305.51

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Solution

The fourth proportional to 30,108.41, 45,138.51 and 14,305.51 is: 21,446.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,108.41 : 45,138.51 = 14,305.51 : x
  2. Step 2: Convert to fraction form
    30,108.41/45,138.51 = 14,305.51/x
  3. Step 3: Cross multiply
    30,108.41x = 45,138.51 × 14,305.51
  4. Step 4: Simplify right side
    30,108.41x = 645,729,108.97
  5. Step 5: Solve for x
    x = 645,729,108.97/30,108.41
  6. Step 6: Final answer
    x = 21,446.81

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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.