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Finding the Fourth Proportional to 38,662,983.20, 57,994,474.80 and 13,448,007.20

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Solution

The fourth proportional to 38,662,983.20, 57,994,474.80 and 13,448,007.20 is: 20,172,010.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,662,983.20 : 57,994,474.80 = 13,448,007.20 : x
  2. Step 2: Convert to fraction form
    38,662,983.20/57,994,474.80 = 13,448,007.20/x
  3. Step 3: Cross multiply
    38,662,983.20x = 57,994,474.80 × 13,448,007.20
  4. Step 4: Simplify right side
    38,662,983.20x = 779,910,114,670,618.50
  5. Step 5: Solve for x
    x = 779,910,114,670,618.50/38,662,983.20
  6. Step 6: Final answer
    x = 20,172,010.80

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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.