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Finding the Fourth Proportional to 39,187.66, 58,784.31 and 19,446.34

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Solution

The fourth proportional to 39,187.66, 58,784.31 and 19,446.34 is: 29,170.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,187.66 : 58,784.31 = 19,446.34 : x
  2. Step 2: Convert to fraction form
    39,187.66/58,784.31 = 19,446.34/x
  3. Step 3: Cross multiply
    39,187.66x = 58,784.31 × 19,446.34
  4. Step 4: Simplify right side
    39,187.66x = 1,143,139,678.93
  5. Step 5: Solve for x
    x = 1,143,139,678.93/39,187.66
  6. Step 6: Final answer
    x = 29,170.91

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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.