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Finding the Fourth Proportional to 65,165.77, 89,918.35 and 36,486.68

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Solution

The fourth proportional to 65,165.77, 89,918.35 and 36,486.68 is: 50,345.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,165.77 : 89,918.35 = 36,486.68 : x
  2. Step 2: Convert to fraction form
    65,165.77/89,918.35 = 36,486.68/x
  3. Step 3: Cross multiply
    65,165.77x = 89,918.35 × 36,486.68
  4. Step 4: Simplify right side
    65,165.77x = 3,280,821,979.90
  5. Step 5: Solve for x
    x = 3,280,821,979.90/65,165.77
  6. Step 6: Final answer
    x = 50,345.79

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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.