Home / 57,178.26-78,904.80-31,684.40

Finding the Fourth Proportional to 57,178.26, 78,904.80 and 31,684.40

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Solution

The fourth proportional to 57,178.26, 78,904.80 and 31,684.40 is: 43,723.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,178.26 : 78,904.80 = 31,684.40 : x
  2. Step 2: Convert to fraction form
    57,178.26/78,904.80 = 31,684.40/x
  3. Step 3: Cross multiply
    57,178.26x = 78,904.80 × 31,684.40
  4. Step 4: Simplify right side
    57,178.26x = 2,500,050,850.60
  5. Step 5: Solve for x
    x = 2,500,050,850.60/57,178.26
  6. Step 6: Final answer
    x = 43,723.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.