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Finding the Fourth Proportional to 86,453.79, 119,336 and 50,655.39

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Solution

The fourth proportional to 86,453.79, 119,336 and 50,655.39 is: 69,921.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,453.79 : 119,336 = 50,655.39 : x
  2. Step 2: Convert to fraction form
    86,453.79/119,336 = 50,655.39/x
  3. Step 3: Cross multiply
    86,453.79x = 119,336 × 50,655.39
  4. Step 4: Simplify right side
    86,453.79x = 6,045,011,621.04
  5. Step 5: Solve for x
    x = 6,045,011,621.04/86,453.79
  6. Step 6: Final answer
    x = 69,921.88

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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.