Home / 78,317,561.58-108,071,907.86-45,279,939.77

Finding the Fourth Proportional to 78,317,561.58, 108,071,907.86 and 45,279,939.77

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Solution

The fourth proportional to 78,317,561.58, 108,071,907.86 and 45,279,939.77 is: 62,482,658.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,317,561.58 : 108,071,907.86 = 45,279,939.77 : x
  2. Step 2: Convert to fraction form
    78,317,561.58/108,071,907.86 = 45,279,939.77/x
  3. Step 3: Cross multiply
    78,317,561.58x = 108,071,907.86 × 45,279,939.77
  4. Step 4: Simplify right side
    78,317,561.58x = 4,893,489,478,729,790
  5. Step 5: Solve for x
    x = 4,893,489,478,729,790/78,317,561.58
  6. Step 6: Final answer
    x = 62,482,658.81

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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.