Home / 81,263,676.33-121,913,579.12-38,109,879.81

Finding the Fourth Proportional to 81,263,676.33, 121,913,579.12 and 38,109,879.81

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Solution

The fourth proportional to 81,263,676.33, 121,913,579.12 and 38,109,879.81 is: 57,173,291.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,263,676.33 : 121,913,579.12 = 38,109,879.81 : x
  2. Step 2: Convert to fraction form
    81,263,676.33/121,913,579.12 = 38,109,879.81/x
  3. Step 3: Cross multiply
    81,263,676.33x = 121,913,579.12 × 38,109,879.81
  4. Step 4: Simplify right side
    81,263,676.33x = 4,646,111,847,279,576
  5. Step 5: Solve for x
    x = 4,646,111,847,279,576/81,263,676.33
  6. Step 6: Final answer
    x = 57,173,291.40

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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.