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Finding the Fourth Proportional to 74,640.94, 103,004.58 and 40,649.48

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Solution

The fourth proportional to 74,640.94, 103,004.58 and 40,649.48 is: 56,096.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,640.94 : 103,004.58 = 40,649.48 : x
  2. Step 2: Convert to fraction form
    74,640.94/103,004.58 = 40,649.48/x
  3. Step 3: Cross multiply
    74,640.94x = 103,004.58 × 40,649.48
  4. Step 4: Simplify right side
    74,640.94x = 4,187,082,614.62
  5. Step 5: Solve for x
    x = 4,187,082,614.62/74,640.94
  6. Step 6: Final answer
    x = 56,096.33

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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.