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Finding the Fourth Proportional to 84,847.20, 127,270.80 and 43,288.80

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Solution

The fourth proportional to 84,847.20, 127,270.80 and 43,288.80 is: 64,933.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,847.20 : 127,270.80 = 43,288.80 : x
  2. Step 2: Convert to fraction form
    84,847.20/127,270.80 = 43,288.80/x
  3. Step 3: Cross multiply
    84,847.20x = 127,270.80 × 43,288.80
  4. Step 4: Simplify right side
    84,847.20x = 5,509,400,207.04
  5. Step 5: Solve for x
    x = 5,509,400,207.04/84,847.20
  6. Step 6: Final answer
    x = 64,933.20

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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.