Home / 57,178.20-78,903.60-31,684.95

Finding the Fourth Proportional to 57,178.20, 78,903.60 and 31,684.95

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Solution

The fourth proportional to 57,178.20, 78,903.60 and 31,684.95 is: 43,723.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,178.20 : 78,903.60 = 31,684.95 : x
  2. Step 2: Convert to fraction form
    57,178.20/78,903.60 = 31,684.95/x
  3. Step 3: Cross multiply
    57,178.20x = 78,903.60 × 31,684.95
  4. Step 4: Simplify right side
    57,178.20x = 2,500,056,620.82
  5. Step 5: Solve for x
    x = 2,500,056,620.82/57,178.20
  6. Step 6: Final answer
    x = 43,723.95

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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.