Home / 72,237.06-99,687.51-40,405.95

Finding the Fourth Proportional to 72,237.06, 99,687.51 and 40,405.95

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Solution

The fourth proportional to 72,237.06, 99,687.51 and 40,405.95 is: 55,760.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,237.06 : 99,687.51 = 40,405.95 : x
  2. Step 2: Convert to fraction form
    72,237.06/99,687.51 = 40,405.95/x
  3. Step 3: Cross multiply
    72,237.06x = 99,687.51 × 40,405.95
  4. Step 4: Simplify right side
    72,237.06x = 4,027,968,544.68
  5. Step 5: Solve for x
    x = 4,027,968,544.68/72,237.06
  6. Step 6: Final answer
    x = 55,760.42

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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.