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Finding the Fourth Proportional to 74,119.89, 102,297.48 and 45,455.49

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Solution

The fourth proportional to 74,119.89, 102,297.48 and 45,455.49 is: 62,735.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,119.89 : 102,297.48 = 45,455.49 : x
  2. Step 2: Convert to fraction form
    74,119.89/102,297.48 = 45,455.49/x
  3. Step 3: Cross multiply
    74,119.89x = 102,297.48 × 45,455.49
  4. Step 4: Simplify right side
    74,119.89x = 4,649,982,079.17
  5. Step 5: Solve for x
    x = 4,649,982,079.17/74,119.89
  6. Step 6: Final answer
    x = 62,735.95

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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.