Home / 69,689,146.18-104,526,907.89-21,167,421.34

Finding the Fourth Proportional to 69,689,146.18, 104,526,907.89 and 21,167,421.34

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Solution

The fourth proportional to 69,689,146.18, 104,526,907.89 and 21,167,421.34 is: 31,749,063.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,689,146.18 : 104,526,907.89 = 21,167,421.34 : x
  2. Step 2: Convert to fraction form
    69,689,146.18/104,526,907.89 = 21,167,421.34/x
  3. Step 3: Cross multiply
    69,689,146.18x = 104,526,907.89 × 21,167,421.34
  4. Step 4: Simplify right side
    69,689,146.18x = 2,212,565,100,675,000.25
  5. Step 5: Solve for x
    x = 2,212,565,100,675,000.25/69,689,146.18
  6. Step 6: Final answer
    x = 31,749,063.12

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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.