Home / 78,066,914-107,732,974.20-43,260,185.68

Finding the Fourth Proportional to 78,066,914, 107,732,974.20 and 43,260,185.68

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Solution

The fourth proportional to 78,066,914, 107,732,974.20 and 43,260,185.68 is: 59,699,406.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,066,914 : 107,732,974.20 = 43,260,185.68 : x
  2. Step 2: Convert to fraction form
    78,066,914/107,732,974.20 = 43,260,185.68/x
  3. Step 3: Cross multiply
    78,066,914x = 107,732,974.20 × 43,260,185.68
  4. Step 4: Simplify right side
    78,066,914x = 4,660,548,467,750,650
  5. Step 5: Solve for x
    x = 4,660,548,467,750,650/78,066,914
  6. Step 6: Final answer
    x = 59,699,406.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.