Home / 39,072,189-53,919,620.82-21,671,198.76

Finding the Fourth Proportional to 39,072,189, 53,919,620.82 and 21,671,198.76

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Solution

The fourth proportional to 39,072,189, 53,919,620.82 and 21,671,198.76 is: 29,906,254.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,072,189 : 53,919,620.82 = 21,671,198.76 : x
  2. Step 2: Convert to fraction form
    39,072,189/53,919,620.82 = 21,671,198.76/x
  3. Step 3: Cross multiply
    39,072,189x = 53,919,620.82 × 21,671,198.76
  4. Step 4: Simplify right side
    39,072,189x = 1,168,502,819,854,054.25
  5. Step 5: Solve for x
    x = 1,168,502,819,854,054.25/39,072,189
  6. Step 6: Final answer
    x = 29,906,254.29

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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.