Home / 67,121.16-100,616-27,711.40

Finding the Fourth Proportional to 67,121.16, 100,616 and 27,711.40

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Solution

The fourth proportional to 67,121.16, 100,616 and 27,711.40 is: 41,539.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,121.16 : 100,616 = 27,711.40 : x
  2. Step 2: Convert to fraction form
    67,121.16/100,616 = 27,711.40/x
  3. Step 3: Cross multiply
    67,121.16x = 100,616 × 27,711.40
  4. Step 4: Simplify right side
    67,121.16x = 2,788,210,222.40
  5. Step 5: Solve for x
    x = 2,788,210,222.40/67,121.16
  6. Step 6: Final answer
    x = 41,539.96

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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.