Home / 84,129,120.92-116,117,557.87-49,333,021.44

Finding the Fourth Proportional to 84,129,120.92, 116,117,557.87 and 49,333,021.44

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Solution

The fourth proportional to 84,129,120.92, 116,117,557.87 and 49,333,021.44 is: 68,090,928.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,129,120.92 : 116,117,557.87 = 49,333,021.44 : x
  2. Step 2: Convert to fraction form
    84,129,120.92/116,117,557.87 = 49,333,021.44/x
  3. Step 3: Cross multiply
    84,129,120.92x = 116,117,557.87 × 49,333,021.44
  4. Step 4: Simplify right side
    84,129,120.92x = 5,728,429,971,837,818
  5. Step 5: Solve for x
    x = 5,728,429,971,837,818/84,129,120.92
  6. Step 6: Final answer
    x = 68,090,928.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.