Home / 78,101,459.73-117,069,591.26-28,885,684.37

Finding the Fourth Proportional to 78,101,459.73, 117,069,591.26 and 28,885,684.37

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Solution

The fourth proportional to 78,101,459.73, 117,069,591.26 and 28,885,684.37 is: 43,297,977.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,101,459.73 : 117,069,591.26 = 28,885,684.37 : x
  2. Step 2: Convert to fraction form
    78,101,459.73/117,069,591.26 = 28,885,684.37/x
  3. Step 3: Cross multiply
    78,101,459.73x = 117,069,591.26 × 28,885,684.37
  4. Step 4: Simplify right side
    78,101,459.73x = 3,381,635,261,948,137
  5. Step 5: Solve for x
    x = 3,381,635,261,948,137/78,101,459.73
  6. Step 6: Final answer
    x = 43,297,977.70

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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.