Home / 49,719.42-74,599.65-20,129.72

Finding the Fourth Proportional to 49,719.42, 74,599.65 and 20,129.72

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Solution

The fourth proportional to 49,719.42, 74,599.65 and 20,129.72 is: 30,202.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,719.42 : 74,599.65 = 20,129.72 : x
  2. Step 2: Convert to fraction form
    49,719.42/74,599.65 = 20,129.72/x
  3. Step 3: Cross multiply
    49,719.42x = 74,599.65 × 20,129.72
  4. Step 4: Simplify right side
    49,719.42x = 1,501,669,693.60
  5. Step 5: Solve for x
    x = 1,501,669,693.60/49,719.42
  6. Step 6: Final answer
    x = 30,202.88

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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.