Home / 81,005,742.23-111,775,898.84-49,199,360.36

Finding the Fourth Proportional to 81,005,742.23, 111,775,898.84 and 49,199,360.36

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Solution

The fourth proportional to 81,005,742.23, 111,775,898.84 and 49,199,360.36 is: 67,887,813.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,005,742.23 : 111,775,898.84 = 49,199,360.36 : x
  2. Step 2: Convert to fraction form
    81,005,742.23/111,775,898.84 = 49,199,360.36/x
  3. Step 3: Cross multiply
    81,005,742.23x = 111,775,898.84 × 49,199,360.36
  4. Step 4: Simplify right side
    81,005,742.23x = 5,499,302,725,787,189
  5. Step 5: Solve for x
    x = 5,499,302,725,787,189/81,005,742.23
  6. Step 6: Final answer
    x = 67,887,813.56

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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.