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Finding the Fourth Proportional to 86,388.48, 119,245.92 and 50,590

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Solution

The fourth proportional to 86,388.48, 119,245.92 and 50,590 is: 69,831.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,388.48 : 119,245.92 = 50,590 : x
  2. Step 2: Convert to fraction form
    86,388.48/119,245.92 = 50,590/x
  3. Step 3: Cross multiply
    86,388.48x = 119,245.92 × 50,590
  4. Step 4: Simplify right side
    86,388.48x = 6,032,651,092.80
  5. Step 5: Solve for x
    x = 6,032,651,092.80/86,388.48
  6. Step 6: Final answer
    x = 69,831.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.