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Finding the Fourth Proportional to 58,130, 87,207.96 and 21,194

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Solution

The fourth proportional to 58,130, 87,207.96 and 21,194 is: 31,795.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,130 : 87,207.96 = 21,194 : x
  2. Step 2: Convert to fraction form
    58,130/87,207.96 = 21,194/x
  3. Step 3: Cross multiply
    58,130x = 87,207.96 × 21,194
  4. Step 4: Simplify right side
    58,130x = 1,848,285,504.24
  5. Step 5: Solve for x
    x = 1,848,285,504.24/58,130
  6. Step 6: Final answer
    x = 31,795.73

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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.