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Finding the Fourth Proportional to 61,579.63, 84,980.84 and 36,079.89

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Solution

The fourth proportional to 61,579.63, 84,980.84 and 36,079.89 is: 49,790.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,579.63 : 84,980.84 = 36,079.89 : x
  2. Step 2: Convert to fraction form
    61,579.63/84,980.84 = 36,079.89/x
  3. Step 3: Cross multiply
    61,579.63x = 84,980.84 × 36,079.89
  4. Step 4: Simplify right side
    61,579.63x = 3,066,099,359.31
  5. Step 5: Solve for x
    x = 3,066,099,359.31/61,579.63
  6. Step 6: Final answer
    x = 49,790.81

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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.