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Finding the Fourth Proportional to 53,761,769.20, 80,642,653.80 and 19,671,785.20

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Solution

The fourth proportional to 53,761,769.20, 80,642,653.80 and 19,671,785.20 is: 29,507,677.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,761,769.20 : 80,642,653.80 = 19,671,785.20 : x
  2. Step 2: Convert to fraction form
    53,761,769.20/80,642,653.80 = 19,671,785.20/x
  3. Step 3: Cross multiply
    53,761,769.20x = 80,642,653.80 × 19,671,785.20
  4. Step 4: Simplify right side
    53,761,769.20x = 1,586,384,963,511,563.75
  5. Step 5: Solve for x
    x = 1,586,384,963,511,563.75/53,761,769.20
  6. Step 6: Final answer
    x = 29,507,677.80

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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.