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Finding the Fourth Proportional to 73,008.47, 100,728.09 and 40,737.87

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Solution

The fourth proportional to 73,008.47, 100,728.09 and 40,737.87 is: 56,205.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,008.47 : 100,728.09 = 40,737.87 : x
  2. Step 2: Convert to fraction form
    73,008.47/100,728.09 = 40,737.87/x
  3. Step 3: Cross multiply
    73,008.47x = 100,728.09 × 40,737.87
  4. Step 4: Simplify right side
    73,008.47x = 4,103,447,835.77
  5. Step 5: Solve for x
    x = 4,103,447,835.77/73,008.47
  6. Step 6: Final answer
    x = 56,205.09

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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.