Home / 78,947.54-108,946.32-43,136.79

Finding the Fourth Proportional to 78,947.54, 108,946.32 and 43,136.79

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Solution

The fourth proportional to 78,947.54, 108,946.32 and 43,136.79 is: 59,528.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,947.54 : 108,946.32 = 43,136.79 : x
  2. Step 2: Convert to fraction form
    78,947.54/108,946.32 = 43,136.79/x
  3. Step 3: Cross multiply
    78,947.54x = 108,946.32 × 43,136.79
  4. Step 4: Simplify right side
    78,947.54x = 4,699,593,956.80
  5. Step 5: Solve for x
    x = 4,699,593,956.80/78,947.54
  6. Step 6: Final answer
    x = 59,528.06

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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.