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Finding the Fourth Proportional to 72,604.74, 100,203.12 and 40,773.56

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Solution

The fourth proportional to 72,604.74, 100,203.12 and 40,773.56 is: 56,272.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,604.74 : 100,203.12 = 40,773.56 : x
  2. Step 2: Convert to fraction form
    72,604.74/100,203.12 = 40,773.56/x
  3. Step 3: Cross multiply
    72,604.74x = 100,203.12 × 40,773.56
  4. Step 4: Simplify right side
    72,604.74x = 4,085,637,424.49
  5. Step 5: Solve for x
    x = 4,085,637,424.49/72,604.74
  6. Step 6: Final answer
    x = 56,272.32

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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.