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Finding the Fourth Proportional to 83,270.70, 124,906.05 and 20,941.20

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Solution

The fourth proportional to 83,270.70, 124,906.05 and 20,941.20 is: 31,411.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,270.70 : 124,906.05 = 20,941.20 : x
  2. Step 2: Convert to fraction form
    83,270.70/124,906.05 = 20,941.20/x
  3. Step 3: Cross multiply
    83,270.70x = 124,906.05 × 20,941.20
  4. Step 4: Simplify right side
    83,270.70x = 2,615,682,574.26
  5. Step 5: Solve for x
    x = 2,615,682,574.26/83,270.70
  6. Step 6: Final answer
    x = 31,411.80

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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.