Home / 72,631.34-100,231.16-40,364.95

Finding the Fourth Proportional to 72,631.34, 100,231.16 and 40,364.95

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Solution

The fourth proportional to 72,631.34, 100,231.16 and 40,364.95 is: 55,703.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,631.34 : 100,231.16 = 40,364.95 : x
  2. Step 2: Convert to fraction form
    72,631.34/100,231.16 = 40,364.95/x
  3. Step 3: Cross multiply
    72,631.34x = 100,231.16 × 40,364.95
  4. Step 4: Simplify right side
    72,631.34x = 4,045,825,497.37
  5. Step 5: Solve for x
    x = 4,045,825,497.37/72,631.34
  6. Step 6: Final answer
    x = 55,703.57

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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.