Home / 78,028,218.76-107,678,951.24-43,223,163.52

Finding the Fourth Proportional to 78,028,218.76, 107,678,951.24 and 43,223,163.52

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Solution

The fourth proportional to 78,028,218.76, 107,678,951.24 and 43,223,163.52 is: 59,647,970.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,028,218.76 : 107,678,951.24 = 43,223,163.52 : x
  2. Step 2: Convert to fraction form
    78,028,218.76/107,678,951.24 = 43,223,163.52/x
  3. Step 3: Cross multiply
    78,028,218.76x = 107,678,951.24 × 43,223,163.52
  4. Step 4: Simplify right side
    78,028,218.76x = 4,654,224,917,108,627
  5. Step 5: Solve for x
    x = 4,654,224,917,108,627/78,028,218.76
  6. Step 6: Final answer
    x = 59,647,970.84

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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.