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Finding the Fourth Proportional to 72,493.57, 100,072.51 and 67,954.17

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Solution

The fourth proportional to 72,493.57, 100,072.51 and 67,954.17 is: 93,806.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,493.57 : 100,072.51 = 67,954.17 : x
  2. Step 2: Convert to fraction form
    72,493.57/100,072.51 = 67,954.17/x
  3. Step 3: Cross multiply
    72,493.57x = 100,072.51 × 67,954.17
  4. Step 4: Simplify right side
    72,493.57x = 6,800,344,186.98
  5. Step 5: Solve for x
    x = 6,800,344,186.98/72,493.57
  6. Step 6: Final answer
    x = 93,806.17

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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.