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Finding the Fourth Proportional to 78,813.72, 108,763.10 and 44,821.34

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Solution

The fourth proportional to 78,813.72, 108,763.10 and 44,821.34 is: 61,853.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,813.72 : 108,763.10 = 44,821.34 : x
  2. Step 2: Convert to fraction form
    78,813.72/108,763.10 = 44,821.34/x
  3. Step 3: Cross multiply
    78,813.72x = 108,763.10 × 44,821.34
  4. Step 4: Simplify right side
    78,813.72x = 4,874,907,884.55
  5. Step 5: Solve for x
    x = 4,874,907,884.55/78,813.72
  6. Step 6: Final answer
    x = 61,853.54

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1.5x scale

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.