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Finding the Fourth Proportional to 47,390.70, 66,416.10 and 47,390.70

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Solution

The fourth proportional to 47,390.70, 66,416.10 and 47,390.70 is: 66,416.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,390.70 : 66,416.10 = 47,390.70 : x
  2. Step 2: Convert to fraction form
    47,390.70/66,416.10 = 47,390.70/x
  3. Step 3: Cross multiply
    47,390.70x = 66,416.10 × 47,390.70
  4. Step 4: Simplify right side
    47,390.70x = 3,147,505,470.27
  5. Step 5: Solve for x
    x = 3,147,505,470.27/47,390.70
  6. Step 6: Final answer
    x = 66,416.10

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