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Finding the Fourth Proportional to 72,593.79, 100,176.84 and 40,764.03

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Solution

The fourth proportional to 72,593.79, 100,176.84 and 40,764.03 is: 56,252.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,593.79 : 100,176.84 = 40,764.03 : x
  2. Step 2: Convert to fraction form
    72,593.79/100,176.84 = 40,764.03/x
  3. Step 3: Cross multiply
    72,593.79x = 100,176.84 × 40,764.03
  4. Step 4: Simplify right side
    72,593.79x = 4,083,611,711.07
  5. Step 5: Solve for x
    x = 4,083,611,711.07/72,593.79
  6. Step 6: Final answer
    x = 56,252.91

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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.