Home / 69,689,111.64-104,526,856.12-21,167,386.80

Finding the Fourth Proportional to 69,689,111.64, 104,526,856.12 and 21,167,386.80

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Solution

The fourth proportional to 69,689,111.64, 104,526,856.12 and 21,167,386.80 is: 31,749,011.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,689,111.64 : 104,526,856.12 = 21,167,386.80 : x
  2. Step 2: Convert to fraction form
    69,689,111.64/104,526,856.12 = 21,167,386.80/x
  3. Step 3: Cross multiply
    69,689,111.64x = 104,526,856.12 × 21,167,386.80
  4. Step 4: Simplify right side
    69,689,111.64x = 2,212,560,394,479,987.50
  5. Step 5: Solve for x
    x = 2,212,560,394,479,987.50/69,689,111.64
  6. Step 6: Final answer
    x = 31,749,011.32

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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.