Home / 78,821,379.35-107,828,205.51-78,489,389.56

Finding the Fourth Proportional to 78,821,379.35, 107,828,205.51 and 78,489,389.56

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Solution

The fourth proportional to 78,821,379.35, 107,828,205.51 and 78,489,389.56 is: 107,374,041.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,821,379.35 : 107,828,205.51 = 78,489,389.56 : x
  2. Step 2: Convert to fraction form
    78,821,379.35/107,828,205.51 = 78,489,389.56/x
  3. Step 3: Cross multiply
    78,821,379.35x = 107,828,205.51 × 78,489,389.56
  4. Step 4: Simplify right side
    78,821,379.35x = 8,463,370,028,056,964
  5. Step 5: Solve for x
    x = 8,463,370,028,056,964/78,821,379.35
  6. Step 6: Final answer
    x = 107,374,041.13

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.