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Finding the Fourth Proportional to 67,280.28, 100,860.12 and 27,812.16

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Solution

The fourth proportional to 67,280.28, 100,860.12 and 27,812.16 is: 41,693.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,280.28 : 100,860.12 = 27,812.16 : x
  2. Step 2: Convert to fraction form
    67,280.28/100,860.12 = 27,812.16/x
  3. Step 3: Cross multiply
    67,280.28x = 100,860.12 × 27,812.16
  4. Step 4: Simplify right side
    67,280.28x = 2,805,137,795.06
  5. Step 5: Solve for x
    x = 2,805,137,795.06/67,280.28
  6. Step 6: Final answer
    x = 41,693.31

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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.