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Finding the Fourth Proportional to 27,488,978.40, 41,198,038.20 and 16,694,821.20

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Solution

The fourth proportional to 27,488,978.40, 41,198,038.20 and 16,694,821.20 is: 25,020,714.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,488,978.40 : 41,198,038.20 = 16,694,821.20 : x
  2. Step 2: Convert to fraction form
    27,488,978.40/41,198,038.20 = 16,694,821.20/x
  3. Step 3: Cross multiply
    27,488,978.40x = 41,198,038.20 × 16,694,821.20
  4. Step 4: Simplify right side
    27,488,978.40x = 687,793,881,539,769.88
  5. Step 5: Solve for x
    x = 687,793,881,539,769.88/27,488,978.40
  6. Step 6: Final answer
    x = 25,020,714.54

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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.