Home / 77,213,363.09-115,819,951.69-19,705,640.41

Finding the Fourth Proportional to 77,213,363.09, 115,819,951.69 and 19,705,640.41

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Solution

The fourth proportional to 77,213,363.09, 115,819,951.69 and 19,705,640.41 is: 29,558,436.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,213,363.09 : 115,819,951.69 = 19,705,640.41 : x
  2. Step 2: Convert to fraction form
    77,213,363.09/115,819,951.69 = 19,705,640.41/x
  3. Step 3: Cross multiply
    77,213,363.09x = 115,819,951.69 × 19,705,640.41
  4. Step 4: Simplify right side
    77,213,363.09x = 2,282,306,319,967,897.50
  5. Step 5: Solve for x
    x = 2,282,306,319,967,897.50/77,213,363.09
  6. Step 6: Final answer
    x = 29,558,436.89

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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.