Home / 40,719.66-61,076.60-12,639.05

Finding the Fourth Proportional to 40,719.66, 61,076.60 and 12,639.05

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Solution

The fourth proportional to 40,719.66, 61,076.60 and 12,639.05 is: 18,957.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,719.66 : 61,076.60 = 12,639.05 : x
  2. Step 2: Convert to fraction form
    40,719.66/61,076.60 = 12,639.05/x
  3. Step 3: Cross multiply
    40,719.66x = 61,076.60 × 12,639.05
  4. Step 4: Simplify right side
    40,719.66x = 771,949,832.65
  5. Step 5: Solve for x
    x = 771,949,832.65/40,719.66
  6. Step 6: Final answer
    x = 18,957.67

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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.