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Finding the Fourth Proportional to 84,690.25, 127,035.38 and 29,286.25

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Solution

The fourth proportional to 84,690.25, 127,035.38 and 29,286.25 is: 43,929.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,690.25 : 127,035.38 = 29,286.25 : x
  2. Step 2: Convert to fraction form
    84,690.25/127,035.38 = 29,286.25/x
  3. Step 3: Cross multiply
    84,690.25x = 127,035.38 × 29,286.25
  4. Step 4: Simplify right side
    84,690.25x = 3,720,389,897.53
  5. Step 5: Solve for x
    x = 3,720,389,897.53/84,690.25
  6. Step 6: Final answer
    x = 43,929.38

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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.