Home / 83,615.92-125,423.39-20,436.37

Finding the Fourth Proportional to 83,615.92, 125,423.39 and 20,436.37

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Solution

The fourth proportional to 83,615.92, 125,423.39 and 20,436.37 is: 30,654.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,615.92 : 125,423.39 = 20,436.37 : x
  2. Step 2: Convert to fraction form
    83,615.92/125,423.39 = 20,436.37/x
  3. Step 3: Cross multiply
    83,615.92x = 125,423.39 × 20,436.37
  4. Step 4: Simplify right side
    83,615.92x = 2,563,198,702.51
  5. Step 5: Solve for x
    x = 2,563,198,702.51/83,615.92
  6. Step 6: Final answer
    x = 30,654.44

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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.