Home / 78,212,484.45-108,022,807.97-51,509,185.70

Finding the Fourth Proportional to 78,212,484.45, 108,022,807.97 and 51,509,185.70

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Solution

The fourth proportional to 78,212,484.45, 108,022,807.97 and 51,509,185.70 is: 71,141,671.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,212,484.45 : 108,022,807.97 = 51,509,185.70 : x
  2. Step 2: Convert to fraction form
    78,212,484.45/108,022,807.97 = 51,509,185.70/x
  3. Step 3: Cross multiply
    78,212,484.45x = 108,022,807.97 × 51,509,185.70
  4. Step 4: Simplify right side
    78,212,484.45x = 5,564,166,874,764,510
  5. Step 5: Solve for x
    x = 5,564,166,874,764,510/78,212,484.45
  6. Step 6: Final answer
    x = 71,141,671.48

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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.