Home / 67,187.56-100,777.72-20,436.80

Finding the Fourth Proportional to 67,187.56, 100,777.72 and 20,436.80

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Solution

The fourth proportional to 67,187.56, 100,777.72 and 20,436.80 is: 30,654.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,187.56 : 100,777.72 = 20,436.80 : x
  2. Step 2: Convert to fraction form
    67,187.56/100,777.72 = 20,436.80/x
  3. Step 3: Cross multiply
    67,187.56x = 100,777.72 × 20,436.80
  4. Step 4: Simplify right side
    67,187.56x = 2,059,574,108.10
  5. Step 5: Solve for x
    x = 2,059,574,108.10/67,187.56
  6. Step 6: Final answer
    x = 30,654.10

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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.