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Finding the Fourth Proportional to 102,791.71, 154,166.25 and 39,590.11

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Solution

The fourth proportional to 102,791.71, 154,166.25 and 39,590.11 is: 59,376.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,791.71 : 154,166.25 = 39,590.11 : x
  2. Step 2: Convert to fraction form
    102,791.71/154,166.25 = 39,590.11/x
  3. Step 3: Cross multiply
    102,791.71x = 154,166.25 × 39,590.11
  4. Step 4: Simplify right side
    102,791.71x = 6,103,458,795.79
  5. Step 5: Solve for x
    x = 6,103,458,795.79/102,791.71
  6. Step 6: Final answer
    x = 59,376.96

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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.