Home / 77,004,977.80-115,507,466.70-68,345,624.20

Finding the Fourth Proportional to 77,004,977.80, 115,507,466.70 and 68,345,624.20

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Solution

The fourth proportional to 77,004,977.80, 115,507,466.70 and 68,345,624.20 is: 102,518,436.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,004,977.80 : 115,507,466.70 = 68,345,624.20 : x
  2. Step 2: Convert to fraction form
    77,004,977.80/115,507,466.70 = 68,345,624.20/x
  3. Step 3: Cross multiply
    77,004,977.80x = 115,507,466.70 × 68,345,624.20
  4. Step 4: Simplify right side
    77,004,977.80x = 7,894,429,911,372,215
  5. Step 5: Solve for x
    x = 7,894,429,911,372,215/77,004,977.80
  6. Step 6: Final answer
    x = 102,518,436.30

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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.