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Finding the Fourth Proportional to 85,859.88, 118,383.67 and 55,634.17

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Solution

The fourth proportional to 85,859.88, 118,383.67 and 55,634.17 is: 76,708.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,859.88 : 118,383.67 = 55,634.17 : x
  2. Step 2: Convert to fraction form
    85,859.88/118,383.67 = 55,634.17/x
  3. Step 3: Cross multiply
    85,859.88x = 118,383.67 × 55,634.17
  4. Step 4: Simplify right side
    85,859.88x = 6,586,176,943.83
  5. Step 5: Solve for x
    x = 6,586,176,943.83/85,859.88
  6. Step 6: Final answer
    x = 76,708.43

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1.5x scale

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.