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Finding the Fourth Proportional to 72,732, 100,359.23 and 40,900.22

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Solution

The fourth proportional to 72,732, 100,359.23 and 40,900.22 is: 56,436.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,732 : 100,359.23 = 40,900.22 : x
  2. Step 2: Convert to fraction form
    72,732/100,359.23 = 40,900.22/x
  3. Step 3: Cross multiply
    72,732x = 100,359.23 × 40,900.22
  4. Step 4: Simplify right side
    72,732x = 4,104,713,879.73
  5. Step 5: Solve for x
    x = 4,104,713,879.73/72,732
  6. Step 6: Final answer
    x = 56,436.15

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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.