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Finding the Fourth Proportional to 81,392.80, 122,204.40 and 63,882.40

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Solution

The fourth proportional to 81,392.80, 122,204.40 and 63,882.40 is: 95,914.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,392.80 : 122,204.40 = 63,882.40 : x
  2. Step 2: Convert to fraction form
    81,392.80/122,204.40 = 63,882.40/x
  3. Step 3: Cross multiply
    81,392.80x = 122,204.40 × 63,882.40
  4. Step 4: Simplify right side
    81,392.80x = 7,806,710,362.56
  5. Step 5: Solve for x
    x = 7,806,710,362.56/81,392.80
  6. Step 6: Final answer
    x = 95,914.02

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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.