Home / 78,946.49-118,503.99-33,990.09

Finding the Fourth Proportional to 78,946.49, 118,503.99 and 33,990.09

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Solution

The fourth proportional to 78,946.49, 118,503.99 and 33,990.09 is: 51,021.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,946.49 : 118,503.99 = 33,990.09 : x
  2. Step 2: Convert to fraction form
    78,946.49/118,503.99 = 33,990.09/x
  3. Step 3: Cross multiply
    78,946.49x = 118,503.99 × 33,990.09
  4. Step 4: Simplify right side
    78,946.49x = 4,027,961,285.46
  5. Step 5: Solve for x
    x = 4,027,961,285.46/78,946.49
  6. Step 6: Final answer
    x = 51,021.41

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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.