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Finding the Fourth Proportional to 74,563.28, 102,895.80 and 40,572.44

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Solution

The fourth proportional to 74,563.28, 102,895.80 and 40,572.44 is: 55,989.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,563.28 : 102,895.80 = 40,572.44 : x
  2. Step 2: Convert to fraction form
    74,563.28/102,895.80 = 40,572.44/x
  3. Step 3: Cross multiply
    74,563.28x = 102,895.80 × 40,572.44
  4. Step 4: Simplify right side
    74,563.28x = 4,174,733,671.75
  5. Step 5: Solve for x
    x = 4,174,733,671.75/74,563.28
  6. Step 6: Final answer
    x = 55,989.14

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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.