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Finding the Fourth Proportional to 58,131, 87,228 and 45,009

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Solution

The fourth proportional to 58,131, 87,228 and 45,009 is: 67,537.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,131 : 87,228 = 45,009 : x
  2. Step 2: Convert to fraction form
    58,131/87,228 = 45,009/x
  3. Step 3: Cross multiply
    58,131x = 87,228 × 45,009
  4. Step 4: Simplify right side
    58,131x = 3,926,045,052
  5. Step 5: Solve for x
    x = 3,926,045,052/58,131
  6. Step 6: Final answer
    x = 67,537.89

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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.