Home / 69,689,128.68-104,526,881.64-21,167,403.84

Finding the Fourth Proportional to 69,689,128.68, 104,526,881.64 and 21,167,403.84

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Solution

The fourth proportional to 69,689,128.68, 104,526,881.64 and 21,167,403.84 is: 31,749,036.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,689,128.68 : 104,526,881.64 = 21,167,403.84 : x
  2. Step 2: Convert to fraction form
    69,689,128.68/104,526,881.64 = 21,167,403.84/x
  3. Step 3: Cross multiply
    69,689,128.68x = 104,526,881.64 × 21,167,403.84
  4. Step 4: Simplify right side
    69,689,128.68x = 2,212,562,715,809,761.50
  5. Step 5: Solve for x
    x = 2,212,562,715,809,761.50/69,689,128.68
  6. Step 6: Final answer
    x = 31,749,036.87

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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.