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Finding the Fourth Proportional to 72,625.43, 100,228.47 and 40,796.21

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Solution

The fourth proportional to 72,625.43, 100,228.47 and 40,796.21 is: 56,301.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,625.43 : 100,228.47 = 40,796.21 : x
  2. Step 2: Convert to fraction form
    72,625.43/100,228.47 = 40,796.21/x
  3. Step 3: Cross multiply
    72,625.43x = 100,228.47 × 40,796.21
  4. Step 4: Simplify right side
    72,625.43x = 4,088,941,710.10
  5. Step 5: Solve for x
    x = 4,088,941,710.10/72,625.43
  6. Step 6: Final answer
    x = 56,301.79

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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.