Home / 78,008,009.21-117,019,757.06-28,836,748.98

Finding the Fourth Proportional to 78,008,009.21, 117,019,757.06 and 28,836,748.98

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Solution

The fourth proportional to 78,008,009.21, 117,019,757.06 and 28,836,748.98 is: 43,257,985.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,008,009.21 : 117,019,757.06 = 28,836,748.98 : x
  2. Step 2: Convert to fraction form
    78,008,009.21/117,019,757.06 = 28,836,748.98/x
  3. Step 3: Cross multiply
    78,008,009.21x = 117,019,757.06 × 28,836,748.98
  4. Step 4: Simplify right side
    78,008,009.21x = 3,374,469,360,003,757
  5. Step 5: Solve for x
    x = 3,374,469,360,003,757/78,008,009.21
  6. Step 6: Final answer
    x = 43,257,985.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.