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Finding the Fourth Proportional to 53,809.92, 80,663.04 and 16,865.28

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Solution

The fourth proportional to 53,809.92, 80,663.04 and 16,865.28 is: 25,281.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,809.92 : 80,663.04 = 16,865.28 : x
  2. Step 2: Convert to fraction form
    53,809.92/80,663.04 = 16,865.28/x
  3. Step 3: Cross multiply
    53,809.92x = 80,663.04 × 16,865.28
  4. Step 4: Simplify right side
    53,809.92x = 1,360,404,755.25
  5. Step 5: Solve for x
    x = 1,360,404,755.25/53,809.92
  6. Step 6: Final answer
    x = 25,281.67

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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.