Home / 78,096,847.30-117,183,656.88-31,408,469.32

Finding the Fourth Proportional to 78,096,847.30, 117,183,656.88 and 31,408,469.32

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Solution

The fourth proportional to 78,096,847.30, 117,183,656.88 and 31,408,469.32 is: 47,128,141.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,096,847.30 : 117,183,656.88 = 31,408,469.32 : x
  2. Step 2: Convert to fraction form
    78,096,847.30/117,183,656.88 = 31,408,469.32/x
  3. Step 3: Cross multiply
    78,096,847.30x = 117,183,656.88 × 31,408,469.32
  4. Step 4: Simplify right side
    78,096,847.30x = 3,680,559,291,920,887
  5. Step 5: Solve for x
    x = 3,680,559,291,920,887/78,096,847.30
  6. Step 6: Final answer
    x = 47,128,141.78

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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.