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Finding the Fourth Proportional to 86,739.84, 119,687.76 and 49,000.32

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Solution

The fourth proportional to 86,739.84, 119,687.76 and 49,000.32 is: 67,612.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,739.84 : 119,687.76 = 49,000.32 : x
  2. Step 2: Convert to fraction form
    86,739.84/119,687.76 = 49,000.32/x
  3. Step 3: Cross multiply
    86,739.84x = 119,687.76 × 49,000.32
  4. Step 4: Simplify right side
    86,739.84x = 5,864,738,540.08
  5. Step 5: Solve for x
    x = 5,864,738,540.08/86,739.84
  6. Step 6: Final answer
    x = 67,612.97

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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.