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Finding the Fourth Proportional to 64,738.34, 89,347.42 and 36,449.54

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Solution

The fourth proportional to 64,738.34, 89,347.42 and 36,449.54 is: 50,305.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,738.34 : 89,347.42 = 36,449.54 : x
  2. Step 2: Convert to fraction form
    64,738.34/89,347.42 = 36,449.54/x
  3. Step 3: Cross multiply
    64,738.34x = 89,347.42 × 36,449.54
  4. Step 4: Simplify right side
    64,738.34x = 3,256,671,821.33
  5. Step 5: Solve for x
    x = 3,256,671,821.33/64,738.34
  6. Step 6: Final answer
    x = 50,305.15

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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.