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Finding the Fourth Proportional to 39,619,489.70, 55,353,911.50 and 39,619,489.70

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Solution

The fourth proportional to 39,619,489.70, 55,353,911.50 and 39,619,489.70 is: 55,353,911.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,619,489.70 : 55,353,911.50 = 39,619,489.70 : x
  2. Step 2: Convert to fraction form
    39,619,489.70/55,353,911.50 = 39,619,489.70/x
  3. Step 3: Cross multiply
    39,619,489.70x = 55,353,911.50 × 39,619,489.70
  4. Step 4: Simplify right side
    39,619,489.70x = 2,193,093,726,528,961.75
  5. Step 5: Solve for x
    x = 2,193,093,726,528,961.75/39,619,489.70
  6. Step 6: Final answer
    x = 55,353,911.50

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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.