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Finding the Fourth Proportional to 72,268.60, 108,421.80 and 27,896.80

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Solution

The fourth proportional to 72,268.60, 108,421.80 and 27,896.80 is: 41,852.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,268.60 : 108,421.80 = 27,896.80 : x
  2. Step 2: Convert to fraction form
    72,268.60/108,421.80 = 27,896.80/x
  3. Step 3: Cross multiply
    72,268.60x = 108,421.80 × 27,896.80
  4. Step 4: Simplify right side
    72,268.60x = 3,024,621,270.24
  5. Step 5: Solve for x
    x = 3,024,621,270.24/72,268.60
  6. Step 6: Final answer
    x = 41,852.50

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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.