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Finding the Fourth Proportional to 72,014.20, 108,021.30 and 68,733.70

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Solution

The fourth proportional to 72,014.20, 108,021.30 and 68,733.70 is: 103,100.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,014.20 : 108,021.30 = 68,733.70 : x
  2. Step 2: Convert to fraction form
    72,014.20/108,021.30 = 68,733.70/x
  3. Step 3: Cross multiply
    72,014.20x = 108,021.30 × 68,733.70
  4. Step 4: Simplify right side
    72,014.20x = 7,424,703,627.81
  5. Step 5: Solve for x
    x = 7,424,703,627.81/72,014.20
  6. Step 6: Final answer
    x = 103,100.55

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1.5x scale

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.