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Finding the Fourth Proportional to 84,845.60, 127,282.80 and 25,680.80

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Solution

The fourth proportional to 84,845.60, 127,282.80 and 25,680.80 is: 38,525.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,845.60 : 127,282.80 = 25,680.80 : x
  2. Step 2: Convert to fraction form
    84,845.60/127,282.80 = 25,680.80/x
  3. Step 3: Cross multiply
    84,845.60x = 127,282.80 × 25,680.80
  4. Step 4: Simplify right side
    84,845.60x = 3,268,724,130.24
  5. Step 5: Solve for x
    x = 3,268,724,130.24/84,845.60
  6. Step 6: Final answer
    x = 38,525.56

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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.