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Finding the Fourth Proportional to 84,951.70, 127,427.10 and 21,771.70

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Solution

The fourth proportional to 84,951.70, 127,427.10 and 21,771.70 is: 32,657.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,951.70 : 127,427.10 = 21,771.70 : x
  2. Step 2: Convert to fraction form
    84,951.70/127,427.10 = 21,771.70/x
  3. Step 3: Cross multiply
    84,951.70x = 127,427.10 × 21,771.70
  4. Step 4: Simplify right side
    84,951.70x = 2,774,304,593.07
  5. Step 5: Solve for x
    x = 2,774,304,593.07/84,951.70
  6. Step 6: Final answer
    x = 32,657.43

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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.