Home / 79,659,686-119,590,383.72-48,878,649.20

Finding the Fourth Proportional to 79,659,686, 119,590,383.72 and 48,878,649.20

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Solution

The fourth proportional to 79,659,686, 119,590,383.72 and 48,878,649.20 is: 73,379,857.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,659,686 : 119,590,383.72 = 48,878,649.20 : x
  2. Step 2: Convert to fraction form
    79,659,686/119,590,383.72 = 48,878,649.20/x
  3. Step 3: Cross multiply
    79,659,686x = 119,590,383.72 × 48,878,649.20
  4. Step 4: Simplify right side
    79,659,686x = 5,845,416,413,543,271
  5. Step 5: Solve for x
    x = 5,845,416,413,543,271/79,659,686
  6. Step 6: Final answer
    x = 73,379,857.58

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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.