Home / 72,651.24-100,256.34-40,385.70

Finding the Fourth Proportional to 72,651.24, 100,256.34 and 40,385.70

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Solution

The fourth proportional to 72,651.24, 100,256.34 and 40,385.70 is: 55,730.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,651.24 : 100,256.34 = 40,385.70 : x
  2. Step 2: Convert to fraction form
    72,651.24/100,256.34 = 40,385.70/x
  3. Step 3: Cross multiply
    72,651.24x = 100,256.34 × 40,385.70
  4. Step 4: Simplify right side
    72,651.24x = 4,048,922,470.34
  5. Step 5: Solve for x
    x = 4,048,922,470.34/72,651.24
  6. Step 6: Final answer
    x = 55,730.95

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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.