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Finding the Fourth Proportional to 74,656.50, 111,986.91 and 19,252.50

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Solution

The fourth proportional to 74,656.50, 111,986.91 and 19,252.50 is: 28,879.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,656.50 : 111,986.91 = 19,252.50 : x
  2. Step 2: Convert to fraction form
    74,656.50/111,986.91 = 19,252.50/x
  3. Step 3: Cross multiply
    74,656.50x = 111,986.91 × 19,252.50
  4. Step 4: Simplify right side
    74,656.50x = 2,156,027,984.78
  5. Step 5: Solve for x
    x = 2,156,027,984.78/74,656.50
  6. Step 6: Final answer
    x = 28,879.31

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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.