Home / 43,760.80-65,720.40-38,317.60

Finding the Fourth Proportional to 43,760.80, 65,720.40 and 38,317.60

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Solution

The fourth proportional to 43,760.80, 65,720.40 and 38,317.60 is: 57,545.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,760.80 : 65,720.40 = 38,317.60 : x
  2. Step 2: Convert to fraction form
    43,760.80/65,720.40 = 38,317.60/x
  3. Step 3: Cross multiply
    43,760.80x = 65,720.40 × 38,317.60
  4. Step 4: Simplify right side
    43,760.80x = 2,518,247,999.04
  5. Step 5: Solve for x
    x = 2,518,247,999.04/43,760.80
  6. Step 6: Final answer
    x = 57,545.75

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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.