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Finding the Fourth Proportional to 45,791.98, 68,678.63 and 28,919.89

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Solution

The fourth proportional to 45,791.98, 68,678.63 and 28,919.89 is: 43,373.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,791.98 : 68,678.63 = 28,919.89 : x
  2. Step 2: Convert to fraction form
    45,791.98/68,678.63 = 28,919.89/x
  3. Step 3: Cross multiply
    45,791.98x = 68,678.63 × 28,919.89
  4. Step 4: Simplify right side
    45,791.98x = 1,986,178,251.01
  5. Step 5: Solve for x
    x = 1,986,178,251.01/45,791.98
  6. Step 6: Final answer
    x = 43,373.93

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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.