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Finding the Fourth Proportional to 76,185.60, 105,101.22 and 49,336.74

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Solution

The fourth proportional to 76,185.60, 105,101.22 and 49,336.74 is: 68,062.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,185.60 : 105,101.22 = 49,336.74 : x
  2. Step 2: Convert to fraction form
    76,185.60/105,101.22 = 49,336.74/x
  3. Step 3: Cross multiply
    76,185.60x = 105,101.22 × 49,336.74
  4. Step 4: Simplify right side
    76,185.60x = 5,185,351,564.82
  5. Step 5: Solve for x
    x = 5,185,351,564.82/76,185.60
  6. Step 6: Final answer
    x = 68,062.10

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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.