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Finding the Fourth Proportional to 47,389.70, 66,414.70 and 47,389.70

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Solution

The fourth proportional to 47,389.70, 66,414.70 and 47,389.70 is: 66,414.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,389.70 : 66,414.70 = 47,389.70 : x
  2. Step 2: Convert to fraction form
    47,389.70/66,414.70 = 47,389.70/x
  3. Step 3: Cross multiply
    47,389.70x = 66,414.70 × 47,389.70
  4. Step 4: Simplify right side
    47,389.70x = 3,147,372,708.59
  5. Step 5: Solve for x
    x = 3,147,372,708.59/47,389.70
  6. Step 6: Final answer
    x = 66,414.70

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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.