Home / 78,541,139,179.72-117,828,254,750.43-25,478,029,016.64

Finding the Fourth Proportional to 78,541,139,179.72, 117,828,254,750.43 and 25,478,029,016.64

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Solution

The fourth proportional to 78,541,139,179.72, 117,828,254,750.43 and 25,478,029,016.64 is: 38,222,410,890.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,541,139,179.72 : 117,828,254,750.43 = 25,478,029,016.64 : x
  2. Step 2: Convert to fraction form
    78,541,139,179.72/117,828,254,750.43 = 25,478,029,016.64/x
  3. Step 3: Cross multiply
    78,541,139,179.72x = 117,828,254,750.43 × 25,478,029,016.64
  4. Step 4: Simplify right side
    78,541,139,179.72x = 3,002,031,693,511,504,953,344
  5. Step 5: Solve for x
    x = 3,002,031,693,511,504,953,344/78,541,139,179.72
  6. Step 6: Final answer
    x = 38,222,410,890.20

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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.