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Finding the Fourth Proportional to 78,894.40, 108,862.24 and 47,063.36

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Solution

The fourth proportional to 78,894.40, 108,862.24 and 47,063.36 is: 64,940.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,894.40 : 108,862.24 = 47,063.36 : x
  2. Step 2: Convert to fraction form
    78,894.40/108,862.24 = 47,063.36/x
  3. Step 3: Cross multiply
    78,894.40x = 108,862.24 × 47,063.36
  4. Step 4: Simplify right side
    78,894.40x = 5,123,422,791.53
  5. Step 5: Solve for x
    x = 5,123,422,791.53/78,894.40
  6. Step 6: Final answer
    x = 64,940.26

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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.