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Finding the Fourth Proportional to 39,366,978.30, 59,050,467.45 and 12,440,634.30

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Solution

The fourth proportional to 39,366,978.30, 59,050,467.45 and 12,440,634.30 is: 18,660,951.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,366,978.30 : 59,050,467.45 = 12,440,634.30 : x
  2. Step 2: Convert to fraction form
    39,366,978.30/59,050,467.45 = 12,440,634.30/x
  3. Step 3: Cross multiply
    39,366,978.30x = 59,050,467.45 × 12,440,634.30
  4. Step 4: Simplify right side
    39,366,978.30x = 734,625,270,789,503.62
  5. Step 5: Solve for x
    x = 734,625,270,789,503.62/39,366,978.30
  6. Step 6: Final answer
    x = 18,660,951.45

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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.