Home / 74,480.27-102,784.78-40,491.06

Finding the Fourth Proportional to 74,480.27, 102,784.78 and 40,491.06

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Solution

The fourth proportional to 74,480.27, 102,784.78 and 40,491.06 is: 55,878.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,480.27 : 102,784.78 = 40,491.06 : x
  2. Step 2: Convert to fraction form
    74,480.27/102,784.78 = 40,491.06/x
  3. Step 3: Cross multiply
    74,480.27x = 102,784.78 × 40,491.06
  4. Step 4: Simplify right side
    74,480.27x = 4,161,864,709.64
  5. Step 5: Solve for x
    x = 4,161,864,709.64/74,480.27
  6. Step 6: Final answer
    x = 55,878.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.