Home / 74,645.13-111,965.67-30,270.90

Finding the Fourth Proportional to 74,645.13, 111,965.67 and 30,270.90

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Solution

The fourth proportional to 74,645.13, 111,965.67 and 30,270.90 is: 45,405.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,645.13 : 111,965.67 = 30,270.90 : x
  2. Step 2: Convert to fraction form
    74,645.13/111,965.67 = 30,270.90/x
  3. Step 3: Cross multiply
    74,645.13x = 111,965.67 × 30,270.90
  4. Step 4: Simplify right side
    74,645.13x = 3,389,301,600.00
  5. Step 5: Solve for x
    x = 3,389,301,600.00/74,645.13
  6. Step 6: Final answer
    x = 45,405.53

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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.