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Finding the Fourth Proportional to 75,121.50, 103,670.91 and 41,587.50

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Solution

The fourth proportional to 75,121.50, 103,670.91 and 41,587.50 is: 57,392.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,121.50 : 103,670.91 = 41,587.50 : x
  2. Step 2: Convert to fraction form
    75,121.50/103,670.91 = 41,587.50/x
  3. Step 3: Cross multiply
    75,121.50x = 103,670.91 × 41,587.50
  4. Step 4: Simplify right side
    75,121.50x = 4,311,413,969.63
  5. Step 5: Solve for x
    x = 4,311,413,969.63/75,121.50
  6. Step 6: Final answer
    x = 57,392.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.