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Finding the Fourth Proportional to 70,743.81, 106,104.17 and 20,812.23

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Solution

The fourth proportional to 70,743.81, 106,104.17 and 20,812.23 is: 31,214.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,743.81 : 106,104.17 = 20,812.23 : x
  2. Step 2: Convert to fraction form
    70,743.81/106,104.17 = 20,812.23/x
  3. Step 3: Cross multiply
    70,743.81x = 106,104.17 × 20,812.23
  4. Step 4: Simplify right side
    70,743.81x = 2,208,264,390.00
  5. Step 5: Solve for x
    x = 2,208,264,390.00/70,743.81
  6. Step 6: Final answer
    x = 31,214.95

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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.