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Finding the Fourth Proportional to 74,273.50, 102,497.43 and 40,738.78

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Solution

The fourth proportional to 74,273.50, 102,497.43 and 40,738.78 is: 56,219.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,273.50 : 102,497.43 = 40,738.78 : x
  2. Step 2: Convert to fraction form
    74,273.50/102,497.43 = 40,738.78/x
  3. Step 3: Cross multiply
    74,273.50x = 102,497.43 × 40,738.78
  4. Step 4: Simplify right side
    74,273.50x = 4,175,620,251.34
  5. Step 5: Solve for x
    x = 4,175,620,251.34/74,273.50
  6. Step 6: Final answer
    x = 56,219.52

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1.5x scale

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.