Home / 31,016.03-42,806.21-30,171.65

Finding the Fourth Proportional to 31,016.03, 42,806.21 and 30,171.65

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Solution

The fourth proportional to 31,016.03, 42,806.21 and 30,171.65 is: 41,640.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,016.03 : 42,806.21 = 30,171.65 : x
  2. Step 2: Convert to fraction form
    31,016.03/42,806.21 = 30,171.65/x
  3. Step 3: Cross multiply
    31,016.03x = 42,806.21 × 30,171.65
  4. Step 4: Simplify right side
    31,016.03x = 1,291,533,985.95
  5. Step 5: Solve for x
    x = 1,291,533,985.95/31,016.03
  6. Step 6: Final answer
    x = 41,640.85

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1.5x scale

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.