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Finding the Fourth Proportional to 40,236.80, 60,376.80 and 16,865.60

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Solution

The fourth proportional to 40,236.80, 60,376.80 and 16,865.60 is: 25,307.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,236.80 : 60,376.80 = 16,865.60 : x
  2. Step 2: Convert to fraction form
    40,236.80/60,376.80 = 16,865.60/x
  3. Step 3: Cross multiply
    40,236.80x = 60,376.80 × 16,865.60
  4. Step 4: Simplify right side
    40,236.80x = 1,018,290,958.08
  5. Step 5: Solve for x
    x = 1,018,290,958.08/40,236.80
  6. Step 6: Final answer
    x = 25,307.45

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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.