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Finding the Fourth Proportional to 45,230.80, 67,865.40 and 21,845.20

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Solution

The fourth proportional to 45,230.80, 67,865.40 and 21,845.20 is: 32,777.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,230.80 : 67,865.40 = 21,845.20 : x
  2. Step 2: Convert to fraction form
    45,230.80/67,865.40 = 21,845.20/x
  3. Step 3: Cross multiply
    45,230.80x = 67,865.40 × 21,845.20
  4. Step 4: Simplify right side
    45,230.80x = 1,482,533,236.08
  5. Step 5: Solve for x
    x = 1,482,533,236.08/45,230.80
  6. Step 6: Final answer
    x = 32,777.07

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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.