Home / 40,708.05-61,065.81-12,628.32

Finding the Fourth Proportional to 40,708.05, 61,065.81 and 12,628.32

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Solution

The fourth proportional to 40,708.05, 61,065.81 and 12,628.32 is: 18,943.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,708.05 : 61,065.81 = 12,628.32 : x
  2. Step 2: Convert to fraction form
    40,708.05/61,065.81 = 12,628.32/x
  3. Step 3: Cross multiply
    40,708.05x = 61,065.81 × 12,628.32
  4. Step 4: Simplify right side
    40,708.05x = 771,158,589.74
  5. Step 5: Solve for x
    x = 771,158,589.74/40,708.05
  6. Step 6: Final answer
    x = 18,943.64

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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.