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Finding the Fourth Proportional to 74,684.73, 103,063.62 and 40,693.50

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Solution

The fourth proportional to 74,684.73, 103,063.62 and 40,693.50 is: 56,156.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,684.73 : 103,063.62 = 40,693.50 : x
  2. Step 2: Convert to fraction form
    74,684.73/103,063.62 = 40,693.50/x
  3. Step 3: Cross multiply
    74,684.73x = 103,063.62 × 40,693.50
  4. Step 4: Simplify right side
    74,684.73x = 4,194,019,168.75
  5. Step 5: Solve for x
    x = 4,194,019,168.75/74,684.73
  6. Step 6: Final answer
    x = 56,156.32

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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.