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Finding the Fourth Proportional to 84,959.81, 127,431.49 and 25,796.00

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Solution

The fourth proportional to 84,959.81, 127,431.49 and 25,796.00 is: 38,691.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,959.81 : 127,431.49 = 25,796.00 : x
  2. Step 2: Convert to fraction form
    84,959.81/127,431.49 = 25,796.00/x
  3. Step 3: Cross multiply
    84,959.81x = 127,431.49 × 25,796.00
  4. Step 4: Simplify right side
    84,959.81x = 3,287,222,014.39
  5. Step 5: Solve for x
    x = 3,287,222,014.39/84,959.81
  6. Step 6: Final answer
    x = 38,691.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.