Home / 78,031,620.50-117,047,096.58-19,739,850.26

Finding the Fourth Proportional to 78,031,620.50, 117,047,096.58 and 19,739,850.26

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Solution

The fourth proportional to 78,031,620.50, 117,047,096.58 and 19,739,850.26 is: 29,609,690.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,031,620.50 : 117,047,096.58 = 19,739,850.26 : x
  2. Step 2: Convert to fraction form
    78,031,620.50/117,047,096.58 = 19,739,850.26/x
  3. Step 3: Cross multiply
    78,031,620.50x = 117,047,096.58 × 19,739,850.26
  4. Step 4: Simplify right side
    78,031,620.50x = 2,310,492,159,856,958.50
  5. Step 5: Solve for x
    x = 2,310,492,159,856,958.50/78,031,620.50
  6. Step 6: Final answer
    x = 29,609,690.85

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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.