Home / 43,723.20-65,509.20-20,301.60

Finding the Fourth Proportional to 43,723.20, 65,509.20 and 20,301.60

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Solution

The fourth proportional to 43,723.20, 65,509.20 and 20,301.60 is: 30,417.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,723.20 : 65,509.20 = 20,301.60 : x
  2. Step 2: Convert to fraction form
    43,723.20/65,509.20 = 20,301.60/x
  3. Step 3: Cross multiply
    43,723.20x = 65,509.20 × 20,301.60
  4. Step 4: Simplify right side
    43,723.20x = 1,329,941,574.72
  5. Step 5: Solve for x
    x = 1,329,941,574.72/43,723.20
  6. Step 6: Final answer
    x = 30,417.30

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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.