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Finding the Fourth Proportional to 74,391.28, 102,634.29 and 47,549.50

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Solution

The fourth proportional to 74,391.28, 102,634.29 and 47,549.50 is: 65,601.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,391.28 : 102,634.29 = 47,549.50 : x
  2. Step 2: Convert to fraction form
    74,391.28/102,634.29 = 47,549.50/x
  3. Step 3: Cross multiply
    74,391.28x = 102,634.29 × 47,549.50
  4. Step 4: Simplify right side
    74,391.28x = 4,880,208,915.77
  5. Step 5: Solve for x
    x = 4,880,208,915.77/74,391.28
  6. Step 6: Final answer
    x = 65,601.90

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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.