Home / 81,077,396.44-121,810,111.73-51,988,227.70

Finding the Fourth Proportional to 81,077,396.44, 121,810,111.73 and 51,988,227.70

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Solution

The fourth proportional to 81,077,396.44, 121,810,111.73 and 51,988,227.70 is: 78,106,748.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,077,396.44 : 121,810,111.73 = 51,988,227.70 : x
  2. Step 2: Convert to fraction form
    81,077,396.44/121,810,111.73 = 51,988,227.70/x
  3. Step 3: Cross multiply
    81,077,396.44x = 121,810,111.73 × 51,988,227.70
  4. Step 4: Simplify right side
    81,077,396.44x = 6,332,691,824,781,682
  5. Step 5: Solve for x
    x = 6,332,691,824,781,682/81,077,396.44
  6. Step 6: Final answer
    x = 78,106,748.65

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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.