Home / 56,719.23-85,091.65-18,768.40

Finding the Fourth Proportional to 56,719.23, 85,091.65 and 18,768.40

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Solution

The fourth proportional to 56,719.23, 85,091.65 and 18,768.40 is: 28,156.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,719.23 : 85,091.65 = 18,768.40 : x
  2. Step 2: Convert to fraction form
    56,719.23/85,091.65 = 18,768.40/x
  3. Step 3: Cross multiply
    56,719.23x = 85,091.65 × 18,768.40
  4. Step 4: Simplify right side
    56,719.23x = 1,597,034,183.30
  5. Step 5: Solve for x
    x = 1,597,034,183.30/56,719.23
  6. Step 6: Final answer
    x = 28,156.84

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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.