Home / 78,202,380.32-107,924,329.32-43,395,070.76

Finding the Fourth Proportional to 78,202,380.32, 107,924,329.32 and 43,395,070.76

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Solution

The fourth proportional to 78,202,380.32, 107,924,329.32 and 43,395,070.76 is: 59,887,996.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,202,380.32 : 107,924,329.32 = 43,395,070.76 : x
  2. Step 2: Convert to fraction form
    78,202,380.32/107,924,329.32 = 43,395,070.76/x
  3. Step 3: Cross multiply
    78,202,380.32x = 107,924,329.32 × 43,395,070.76
  4. Step 4: Simplify right side
    78,202,380.32x = 4,683,383,907,566,942
  5. Step 5: Solve for x
    x = 4,683,383,907,566,942/78,202,380.32
  6. Step 6: Final answer
    x = 59,887,996.87

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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.