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Finding the Fourth Proportional to 69,893,603.20, 104,840,404.80 and 65,912,291.20

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Solution

The fourth proportional to 69,893,603.20, 104,840,404.80 and 65,912,291.20 is: 98,868,436.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,893,603.20 : 104,840,404.80 = 65,912,291.20 : x
  2. Step 2: Convert to fraction form
    69,893,603.20/104,840,404.80 = 65,912,291.20/x
  3. Step 3: Cross multiply
    69,893,603.20x = 104,840,404.80 × 65,912,291.20
  4. Step 4: Simplify right side
    69,893,603.20x = 6,910,271,290,703,478
  5. Step 5: Solve for x
    x = 6,910,271,290,703,478/69,893,603.20
  6. Step 6: Final answer
    x = 98,868,436.80

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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.