Home / 77,213,359.39-115,819,946.13-19,705,636.70

Finding the Fourth Proportional to 77,213,359.39, 115,819,946.13 and 19,705,636.70

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Solution

The fourth proportional to 77,213,359.39, 115,819,946.13 and 19,705,636.70 is: 29,558,431.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,213,359.39 : 115,819,946.13 = 19,705,636.70 : x
  2. Step 2: Convert to fraction form
    77,213,359.39/115,819,946.13 = 19,705,636.70/x
  3. Step 3: Cross multiply
    77,213,359.39x = 115,819,946.13 × 19,705,636.70
  4. Step 4: Simplify right side
    77,213,359.39x = 2,282,305,781,482,910.50
  5. Step 5: Solve for x
    x = 2,282,305,781,482,910.50/77,213,359.39
  6. Step 6: Final answer
    x = 29,558,431.33

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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.