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Finding the Fourth Proportional to 71,485.54, 107,223.64 and 29,354.70

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Solution

The fourth proportional to 71,485.54, 107,223.64 and 29,354.70 is: 44,030.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,485.54 : 107,223.64 = 29,354.70 : x
  2. Step 2: Convert to fraction form
    71,485.54/107,223.64 = 29,354.70/x
  3. Step 3: Cross multiply
    71,485.54x = 107,223.64 × 29,354.70
  4. Step 4: Simplify right side
    71,485.54x = 3,147,517,785.11
  5. Step 5: Solve for x
    x = 3,147,517,785.11/71,485.54
  6. Step 6: Final answer
    x = 44,030.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.