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Finding the Fourth Proportional to 78,830.74, 108,788.97 and 44,838.36

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Solution

The fourth proportional to 78,830.74, 108,788.97 and 44,838.36 is: 61,878.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,830.74 : 108,788.97 = 44,838.36 : x
  2. Step 2: Convert to fraction form
    78,830.74/108,788.97 = 44,838.36/x
  3. Step 3: Cross multiply
    78,830.74x = 108,788.97 × 44,838.36
  4. Step 4: Simplify right side
    78,830.74x = 4,877,918,439.90
  5. Step 5: Solve for x
    x = 4,877,918,439.90/78,830.74
  6. Step 6: Final answer
    x = 61,878.38

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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.