Home / 72,782.29-100,439.94-40,951.72

Finding the Fourth Proportional to 72,782.29, 100,439.94 and 40,951.72

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Solution

The fourth proportional to 72,782.29, 100,439.94 and 40,951.72 is: 56,513.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,782.29 : 100,439.94 = 40,951.72 : x
  2. Step 2: Convert to fraction form
    72,782.29/100,439.94 = 40,951.72/x
  3. Step 3: Cross multiply
    72,782.29x = 100,439.94 × 40,951.72
  4. Step 4: Simplify right side
    72,782.29x = 4,113,188,299.70
  5. Step 5: Solve for x
    x = 4,113,188,299.70/72,782.29
  6. Step 6: Final answer
    x = 56,513.59

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1.5x scale

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.