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Finding the Fourth Proportional to 74,395.70, 102,683.92 and 42,583.04

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Solution

The fourth proportional to 74,395.70, 102,683.92 and 42,583.04 is: 58,774.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,395.70 : 102,683.92 = 42,583.04 : x
  2. Step 2: Convert to fraction form
    74,395.70/102,683.92 = 42,583.04/x
  3. Step 3: Cross multiply
    74,395.70x = 102,683.92 × 42,583.04
  4. Step 4: Simplify right side
    74,395.70x = 4,372,593,472.72
  5. Step 5: Solve for x
    x = 4,372,593,472.72/74,395.70
  6. Step 6: Final answer
    x = 58,774.81

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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.