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Finding the Fourth Proportional to 28,872.60, 40,499.40 and 28,872.60

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Solution

The fourth proportional to 28,872.60, 40,499.40 and 28,872.60 is: 40,499.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,872.60 : 40,499.40 = 28,872.60 : x
  2. Step 2: Convert to fraction form
    28,872.60/40,499.40 = 28,872.60/x
  3. Step 3: Cross multiply
    28,872.60x = 40,499.40 × 28,872.60
  4. Step 4: Simplify right side
    28,872.60x = 1,169,322,976.44
  5. Step 5: Solve for x
    x = 1,169,322,976.44/28,872.60
  6. Step 6: Final answer
    x = 40,499.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.