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Finding the Fourth Proportional to 76,859.37, 114,525 and 68,474.97

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Solution

The fourth proportional to 76,859.37, 114,525 and 68,474.97 is: 102,031.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,859.37 : 114,525 = 68,474.97 : x
  2. Step 2: Convert to fraction form
    76,859.37/114,525 = 68,474.97/x
  3. Step 3: Cross multiply
    76,859.37x = 114,525 × 68,474.97
  4. Step 4: Simplify right side
    76,859.37x = 7,842,095,939.25
  5. Step 5: Solve for x
    x = 7,842,095,939.25/76,859.37
  6. Step 6: Final answer
    x = 102,031.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.