Home / 72,005,995.83-107,996,821.72-20,178,679.27

Finding the Fourth Proportional to 72,005,995.83, 107,996,821.72 and 20,178,679.27

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Solution

The fourth proportional to 72,005,995.83, 107,996,821.72 and 20,178,679.27 is: 30,264,607.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,005,995.83 : 107,996,821.72 = 20,178,679.27 : x
  2. Step 2: Convert to fraction form
    72,005,995.83/107,996,821.72 = 20,178,679.27/x
  3. Step 3: Cross multiply
    72,005,995.83x = 107,996,821.72 × 20,178,679.27
  4. Step 4: Simplify right side
    72,005,995.83x = 2,179,233,227,667,249.75
  5. Step 5: Solve for x
    x = 2,179,233,227,667,249.75/72,005,995.83
  6. Step 6: Final answer
    x = 30,264,607.86

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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.