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Finding the Fourth Proportional to 86,343.88, 119,108.94 and 59,439.84

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Solution

The fourth proportional to 86,343.88, 119,108.94 and 59,439.84 is: 81,995.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,343.88 : 119,108.94 = 59,439.84 : x
  2. Step 2: Convert to fraction form
    86,343.88/119,108.94 = 59,439.84/x
  3. Step 3: Cross multiply
    86,343.88x = 119,108.94 × 59,439.84
  4. Step 4: Simplify right side
    86,343.88x = 7,079,816,336.17
  5. Step 5: Solve for x
    x = 7,079,816,336.17/86,343.88
  6. Step 6: Final answer
    x = 81,995.58

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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.