Home / 81,031,886.69-111,782,157.86-54,917,473.73

Finding the Fourth Proportional to 81,031,886.69, 111,782,157.86 and 54,917,473.73

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Solution

The fourth proportional to 81,031,886.69, 111,782,157.86 and 54,917,473.73 is: 75,757,753.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,031,886.69 : 111,782,157.86 = 54,917,473.73 : x
  2. Step 2: Convert to fraction form
    81,031,886.69/111,782,157.86 = 54,917,473.73/x
  3. Step 3: Cross multiply
    81,031,886.69x = 111,782,157.86 × 54,917,473.73
  4. Step 4: Simplify right side
    81,031,886.69x = 6,138,793,717,759,263
  5. Step 5: Solve for x
    x = 6,138,793,717,759,263/81,031,886.69
  6. Step 6: Final answer
    x = 75,757,753.75

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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.