Home / 76,821.44-106,014.72-42,828.92

Finding the Fourth Proportional to 76,821.44, 106,014.72 and 42,828.92

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Solution

The fourth proportional to 76,821.44, 106,014.72 and 42,828.92 is: 59,104.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,821.44 : 106,014.72 = 42,828.92 : x
  2. Step 2: Convert to fraction form
    76,821.44/106,014.72 = 42,828.92/x
  3. Step 3: Cross multiply
    76,821.44x = 106,014.72 × 42,828.92
  4. Step 4: Simplify right side
    76,821.44x = 4,540,495,961.70
  5. Step 5: Solve for x
    x = 4,540,495,961.70/76,821.44
  6. Step 6: Final answer
    x = 59,104.54

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Double scale
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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.