Home / 78,451.49-117,611.09-34,044.78

Finding the Fourth Proportional to 78,451.49, 117,611.09 and 34,044.78

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Solution

The fourth proportional to 78,451.49, 117,611.09 and 34,044.78 is: 51,038.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,451.49 : 117,611.09 = 34,044.78 : x
  2. Step 2: Convert to fraction form
    78,451.49/117,611.09 = 34,044.78/x
  3. Step 3: Cross multiply
    78,451.49x = 117,611.09 × 34,044.78
  4. Step 4: Simplify right side
    78,451.49x = 4,004,043,752.31
  5. Step 5: Solve for x
    x = 4,004,043,752.31/78,451.49
  6. Step 6: Final answer
    x = 51,038.47

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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.