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Finding the Fourth Proportional to 76,348.41, 105,410.28 and 49,136.68

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Solution

The fourth proportional to 76,348.41, 105,410.28 and 49,136.68 is: 67,840.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,348.41 : 105,410.28 = 49,136.68 : x
  2. Step 2: Convert to fraction form
    76,348.41/105,410.28 = 49,136.68/x
  3. Step 3: Cross multiply
    76,348.41x = 105,410.28 × 49,136.68
  4. Step 4: Simplify right side
    76,348.41x = 5,179,511,197.07
  5. Step 5: Solve for x
    x = 5,179,511,197.07/76,348.41
  6. Step 6: Final answer
    x = 67,840.46

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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.