Home / 81,338,786.52-112,206,020.50-51,939,207.96

Finding the Fourth Proportional to 81,338,786.52, 112,206,020.50 and 51,939,207.96

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Solution

The fourth proportional to 81,338,786.52, 112,206,020.50 and 51,939,207.96 is: 71,649,603.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,338,786.52 : 112,206,020.50 = 51,939,207.96 : x
  2. Step 2: Convert to fraction form
    81,338,786.52/112,206,020.50 = 51,939,207.96/x
  3. Step 3: Cross multiply
    81,338,786.52x = 112,206,020.50 × 51,939,207.96
  4. Step 4: Simplify right side
    81,338,786.52x = 5,827,891,833,113,523
  5. Step 5: Solve for x
    x = 5,827,891,833,113,523/81,338,786.52
  6. Step 6: Final answer
    x = 71,649,603.87

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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.