Home / 81,964,943.40-123,089,132.70-43,701,191.40

Finding the Fourth Proportional to 81,964,943.40, 123,089,132.70 and 43,701,191.40

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Solution

The fourth proportional to 81,964,943.40, 123,089,132.70 and 43,701,191.40 is: 65,627,346.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,964,943.40 : 123,089,132.70 = 43,701,191.40 : x
  2. Step 2: Convert to fraction form
    81,964,943.40/123,089,132.70 = 43,701,191.40/x
  3. Step 3: Cross multiply
    81,964,943.40x = 123,089,132.70 × 43,701,191.40
  4. Step 4: Simplify right side
    81,964,943.40x = 5,379,141,747,382,699
  5. Step 5: Solve for x
    x = 5,379,141,747,382,699/81,964,943.40
  6. Step 6: Final answer
    x = 65,627,346.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.