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Finding the Fourth Proportional to 101,992.80, 153,010.80 and 30,909.60

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Solution

The fourth proportional to 101,992.80, 153,010.80 and 30,909.60 is: 46,370.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,992.80 : 153,010.80 = 30,909.60 : x
  2. Step 2: Convert to fraction form
    101,992.80/153,010.80 = 30,909.60/x
  3. Step 3: Cross multiply
    101,992.80x = 153,010.80 × 30,909.60
  4. Step 4: Simplify right side
    101,992.80x = 4,729,502,623.68
  5. Step 5: Solve for x
    x = 4,729,502,623.68/101,992.80
  6. Step 6: Final answer
    x = 46,370.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.