Home / 74,643.13-111,962.67-30,268.90

Finding the Fourth Proportional to 74,643.13, 111,962.67 and 30,268.90

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Solution

The fourth proportional to 74,643.13, 111,962.67 and 30,268.90 is: 45,402.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,643.13 : 111,962.67 = 30,268.90 : x
  2. Step 2: Convert to fraction form
    74,643.13/111,962.67 = 30,268.90/x
  3. Step 3: Cross multiply
    74,643.13x = 111,962.67 × 30,268.90
  4. Step 4: Simplify right side
    74,643.13x = 3,388,986,861.96
  5. Step 5: Solve for x
    x = 3,388,986,861.96/74,643.13
  6. Step 6: Final answer
    x = 45,402.53

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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.