Home / 77,278,711.44-106,647,021.72-42,470,769.36

Finding the Fourth Proportional to 77,278,711.44, 106,647,021.72 and 42,470,769.36

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Solution

The fourth proportional to 77,278,711.44, 106,647,021.72 and 42,470,769.36 is: 58,610,980.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,278,711.44 : 106,647,021.72 = 42,470,769.36 : x
  2. Step 2: Convert to fraction form
    77,278,711.44/106,647,021.72 = 42,470,769.36/x
  3. Step 3: Cross multiply
    77,278,711.44x = 106,647,021.72 × 42,470,769.36
  4. Step 4: Simplify right side
    77,278,711.44x = 4,529,381,062,401,030
  5. Step 5: Solve for x
    x = 4,529,381,062,401,030/77,278,711.44
  6. Step 6: Final answer
    x = 58,610,980.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.