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Finding the Fourth Proportional to 47,388.20, 66,412.60 and 47,388.20

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Solution

The fourth proportional to 47,388.20, 66,412.60 and 47,388.20 is: 66,412.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,388.20 : 66,412.60 = 47,388.20 : x
  2. Step 2: Convert to fraction form
    47,388.20/66,412.60 = 47,388.20/x
  3. Step 3: Cross multiply
    47,388.20x = 66,412.60 × 47,388.20
  4. Step 4: Simplify right side
    47,388.20x = 3,147,173,571.32
  5. Step 5: Solve for x
    x = 3,147,173,571.32/47,388.20
  6. Step 6: Final answer
    x = 66,412.60

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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.