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Finding the Fourth Proportional to 78,428.25, 108,245.57 and 44,894.25

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Solution

The fourth proportional to 78,428.25, 108,245.57 and 44,894.25 is: 61,962.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,428.25 : 108,245.57 = 44,894.25 : x
  2. Step 2: Convert to fraction form
    78,428.25/108,245.57 = 44,894.25/x
  3. Step 3: Cross multiply
    78,428.25x = 108,245.57 × 44,894.25
  4. Step 4: Simplify right side
    78,428.25x = 4,859,603,456.50
  5. Step 5: Solve for x
    x = 4,859,603,456.50/78,428.25
  6. Step 6: Final answer
    x = 61,962.41

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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.