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Finding the Fourth Proportional to 85,086.80, 117,388.20 and 84,955.58

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Solution

The fourth proportional to 85,086.80, 117,388.20 and 84,955.58 is: 117,207.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,086.80 : 117,388.20 = 84,955.58 : x
  2. Step 2: Convert to fraction form
    85,086.80/117,388.20 = 84,955.58/x
  3. Step 3: Cross multiply
    85,086.80x = 117,388.20 × 84,955.58
  4. Step 4: Simplify right side
    85,086.80x = 9,972,782,616.16
  5. Step 5: Solve for x
    x = 9,972,782,616.16/85,086.80
  6. Step 6: Final answer
    x = 117,207.17

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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.