Home / 38,770,990.40-53,504,328.48-21,367,956.80

Finding the Fourth Proportional to 38,770,990.40, 53,504,328.48 and 21,367,956.80

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Solution

The fourth proportional to 38,770,990.40, 53,504,328.48 and 21,367,956.80 is: 29,487,979.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,770,990.40 : 53,504,328.48 = 21,367,956.80 : x
  2. Step 2: Convert to fraction form
    38,770,990.40/53,504,328.48 = 21,367,956.80/x
  3. Step 3: Cross multiply
    38,770,990.40x = 53,504,328.48 × 21,367,956.80
  4. Step 4: Simplify right side
    38,770,990.40x = 1,143,278,179,573,649.75
  5. Step 5: Solve for x
    x = 1,143,278,179,573,649.75/38,770,990.40
  6. Step 6: Final answer
    x = 29,487,979.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.