Home / 78,320,105.20-108,075,408.67-45,282,474.01

Finding the Fourth Proportional to 78,320,105.20, 108,075,408.67 and 45,282,474.01

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Solution

The fourth proportional to 78,320,105.20, 108,075,408.67 and 45,282,474.01 is: 62,486,150.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,320,105.20 : 108,075,408.67 = 45,282,474.01 : x
  2. Step 2: Convert to fraction form
    78,320,105.20/108,075,408.67 = 45,282,474.01/x
  3. Step 3: Cross multiply
    78,320,105.20x = 108,075,408.67 × 45,282,474.01
  4. Step 4: Simplify right side
    78,320,105.20x = 4,893,921,883,836,009
  5. Step 5: Solve for x
    x = 4,893,921,883,836,009/78,320,105.20
  6. Step 6: Final answer
    x = 62,486,150.54

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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.