Home / 72,290.45-99,751.95-40,022.61

Finding the Fourth Proportional to 72,290.45, 99,751.95 and 40,022.61

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Solution

The fourth proportional to 72,290.45, 99,751.95 and 40,022.61 is: 55,226.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,290.45 : 99,751.95 = 40,022.61 : x
  2. Step 2: Convert to fraction form
    72,290.45/99,751.95 = 40,022.61/x
  3. Step 3: Cross multiply
    72,290.45x = 99,751.95 × 40,022.61
  4. Step 4: Simplify right side
    72,290.45x = 3,992,333,391.59
  5. Step 5: Solve for x
    x = 3,992,333,391.59/72,290.45
  6. Step 6: Final answer
    x = 55,226.29

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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.