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Finding the Fourth Proportional to 70,260.27, 105,395.90 and 20,341.11

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Solution

The fourth proportional to 70,260.27, 105,395.90 and 20,341.11 is: 30,513.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,260.27 : 105,395.90 = 20,341.11 : x
  2. Step 2: Convert to fraction form
    70,260.27/105,395.90 = 20,341.11/x
  3. Step 3: Cross multiply
    70,260.27x = 105,395.90 × 20,341.11
  4. Step 4: Simplify right side
    70,260.27x = 2,143,869,493.74
  5. Step 5: Solve for x
    x = 2,143,869,493.74/70,260.27
  6. Step 6: Final answer
    x = 30,513.25

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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.