Home / 81,384,749.21-122,072,179.80-28,865,023.13

Finding the Fourth Proportional to 81,384,749.21, 122,072,179.80 and 28,865,023.13

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Solution

The fourth proportional to 81,384,749.21, 122,072,179.80 and 28,865,023.13 is: 43,295,781.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,384,749.21 : 122,072,179.80 = 28,865,023.13 : x
  2. Step 2: Convert to fraction form
    81,384,749.21/122,072,179.80 = 28,865,023.13/x
  3. Step 3: Cross multiply
    81,384,749.21x = 122,072,179.80 × 28,865,023.13
  4. Step 4: Simplify right side
    81,384,749.21x = 3,523,616,293,456,518.50
  5. Step 5: Solve for x
    x = 3,523,616,293,456,518.50/81,384,749.21
  6. Step 6: Final answer
    x = 43,295,781.18

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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.