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Finding the Fourth Proportional to 61,165.35, 91,757.16 and 21,719.16

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Solution

The fourth proportional to 61,165.35, 91,757.16 and 21,719.16 is: 32,581.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,165.35 : 91,757.16 = 21,719.16 : x
  2. Step 2: Convert to fraction form
    61,165.35/91,757.16 = 21,719.16/x
  3. Step 3: Cross multiply
    61,165.35x = 91,757.16 × 21,719.16
  4. Step 4: Simplify right side
    61,165.35x = 1,992,888,439.19
  5. Step 5: Solve for x
    x = 1,992,888,439.19/61,165.35
  6. Step 6: Final answer
    x = 32,581.98

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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.