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Finding the Fourth Proportional to 58,186, 87,279 and 21,250

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Solution

The fourth proportional to 58,186, 87,279 and 21,250 is: 31,875

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,186 : 87,279 = 21,250 : x
  2. Step 2: Convert to fraction form
    58,186/87,279 = 21,250/x
  3. Step 3: Cross multiply
    58,186x = 87,279 × 21,250
  4. Step 4: Simplify right side
    58,186x = 1,854,678,750
  5. Step 5: Solve for x
    x = 1,854,678,750/58,186
  6. Step 6: Final answer
    x = 31,875

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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.