Home / 78,101,451.86-117,069,579.45-28,885,676.49

Finding the Fourth Proportional to 78,101,451.86, 117,069,579.45 and 28,885,676.49

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Solution

The fourth proportional to 78,101,451.86, 117,069,579.45 and 28,885,676.49 is: 43,297,965.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,101,451.86 : 117,069,579.45 = 28,885,676.49 : x
  2. Step 2: Convert to fraction form
    78,101,451.86/117,069,579.45 = 28,885,676.49/x
  3. Step 3: Cross multiply
    78,101,451.86x = 117,069,579.45 × 28,885,676.49
  4. Step 4: Simplify right side
    78,101,451.86x = 3,381,633,998,813,052
  5. Step 5: Solve for x
    x = 3,381,633,998,813,052/78,101,451.86
  6. Step 6: Final answer
    x = 43,297,965.90

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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.