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Finding the Fourth Proportional to 74,371.62, 102,594.81 and 47,485.86

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Solution

The fourth proportional to 74,371.62, 102,594.81 and 47,485.86 is: 65,506.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,371.62 : 102,594.81 = 47,485.86 : x
  2. Step 2: Convert to fraction form
    74,371.62/102,594.81 = 47,485.86/x
  3. Step 3: Cross multiply
    74,371.62x = 102,594.81 × 47,485.86
  4. Step 4: Simplify right side
    74,371.62x = 4,871,802,784.39
  5. Step 5: Solve for x
    x = 4,871,802,784.39/74,371.62
  6. Step 6: Final answer
    x = 65,506.21

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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.