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Finding the Fourth Proportional to 69,013,846.80, 103,432,852.80 and 36,681,238.80

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Solution

The fourth proportional to 69,013,846.80, 103,432,852.80 and 36,681,238.80 is: 54,975,129.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,013,846.80 : 103,432,852.80 = 36,681,238.80 : x
  2. Step 2: Convert to fraction form
    69,013,846.80/103,432,852.80 = 36,681,238.80/x
  3. Step 3: Cross multiply
    69,013,846.80x = 103,432,852.80 × 36,681,238.80
  4. Step 4: Simplify right side
    69,013,846.80x = 3,794,045,173,322,048
  5. Step 5: Solve for x
    x = 3,794,045,173,322,048/69,013,846.80
  6. Step 6: Final answer
    x = 54,975,129.62

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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.