Home / 72,420.94-99,935.42-40,583.68

Finding the Fourth Proportional to 72,420.94, 99,935.42 and 40,583.68

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Solution

The fourth proportional to 72,420.94, 99,935.42 and 40,583.68 is: 56,002.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,420.94 : 99,935.42 = 40,583.68 : x
  2. Step 2: Convert to fraction form
    72,420.94/99,935.42 = 40,583.68/x
  3. Step 3: Cross multiply
    72,420.94x = 99,935.42 × 40,583.68
  4. Step 4: Simplify right side
    72,420.94x = 4,055,747,105.95
  5. Step 5: Solve for x
    x = 4,055,747,105.95/72,420.94
  6. Step 6: Final answer
    x = 56,002.41

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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.