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Finding the Fourth Proportional to 45,406.66, 68,161.02 and 19,133.50

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Solution

The fourth proportional to 45,406.66, 68,161.02 and 19,133.50 is: 28,721.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,406.66 : 68,161.02 = 19,133.50 : x
  2. Step 2: Convert to fraction form
    45,406.66/68,161.02 = 19,133.50/x
  3. Step 3: Cross multiply
    45,406.66x = 68,161.02 × 19,133.50
  4. Step 4: Simplify right side
    45,406.66x = 1,304,158,876.17
  5. Step 5: Solve for x
    x = 1,304,158,876.17/45,406.66
  6. Step 6: Final answer
    x = 28,721.75

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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.