Home / 55,186.20-82,800.90-20,129.40

Finding the Fourth Proportional to 55,186.20, 82,800.90 and 20,129.40

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Solution

The fourth proportional to 55,186.20, 82,800.90 and 20,129.40 is: 30,201.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,186.20 : 82,800.90 = 20,129.40 : x
  2. Step 2: Convert to fraction form
    55,186.20/82,800.90 = 20,129.40/x
  3. Step 3: Cross multiply
    55,186.20x = 82,800.90 × 20,129.40
  4. Step 4: Simplify right side
    55,186.20x = 1,666,732,436.46
  5. Step 5: Solve for x
    x = 1,666,732,436.46/55,186.20
  6. Step 6: Final answer
    x = 30,201.98

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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.