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Finding the Fourth Proportional to 47,391,740.70, 66,438,016.50 and 47,391,740.70

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Solution

The fourth proportional to 47,391,740.70, 66,438,016.50 and 47,391,740.70 is: 66,438,016.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,391,740.70 : 66,438,016.50 = 47,391,740.70 : x
  2. Step 2: Convert to fraction form
    47,391,740.70/66,438,016.50 = 47,391,740.70/x
  3. Step 3: Cross multiply
    47,391,740.70x = 66,438,016.50 × 47,391,740.70
  4. Step 4: Simplify right side
    47,391,740.70x = 3,148,613,250,590,321.50
  5. Step 5: Solve for x
    x = 3,148,613,250,590,321.50/47,391,740.70
  6. Step 6: Final answer
    x = 66,438,016.50

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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.