Home / 71,505,317.31-107,258,972.42-20,387,336.12

Finding the Fourth Proportional to 71,505,317.31, 107,258,972.42 and 20,387,336.12

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Solution

The fourth proportional to 71,505,317.31, 107,258,972.42 and 20,387,336.12 is: 30,581,288.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,505,317.31 : 107,258,972.42 = 20,387,336.12 : x
  2. Step 2: Convert to fraction form
    71,505,317.31/107,258,972.42 = 20,387,336.12/x
  3. Step 3: Cross multiply
    71,505,317.31x = 107,258,972.42 × 20,387,336.12
  4. Step 4: Simplify right side
    71,505,317.31x = 2,186,724,723,075,287.75
  5. Step 5: Solve for x
    x = 2,186,724,723,075,287.75/71,505,317.31
  6. Step 6: Final answer
    x = 30,581,288.29

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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.