Home / 77,213,375.85-115,819,970.82-19,705,653.18

Finding the Fourth Proportional to 77,213,375.85, 115,819,970.82 and 19,705,653.18

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Solution

The fourth proportional to 77,213,375.85, 115,819,970.82 and 19,705,653.18 is: 29,558,456.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,213,375.85 : 115,819,970.82 = 19,705,653.18 : x
  2. Step 2: Convert to fraction form
    77,213,375.85/115,819,970.82 = 19,705,653.18/x
  3. Step 3: Cross multiply
    77,213,375.85x = 115,819,970.82 × 19,705,653.18
  4. Step 4: Simplify right side
    77,213,375.85x = 2,282,308,176,296,640
  5. Step 5: Solve for x
    x = 2,282,308,176,296,640/77,213,375.85
  6. Step 6: Final answer
    x = 29,558,456.05

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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.