Home / 85,039.27-127,558.65-40,655.65

Finding the Fourth Proportional to 85,039.27, 127,558.65 and 40,655.65

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Solution

The fourth proportional to 85,039.27, 127,558.65 and 40,655.65 is: 60,983.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,039.27 : 127,558.65 = 40,655.65 : x
  2. Step 2: Convert to fraction form
    85,039.27/127,558.65 = 40,655.65/x
  3. Step 3: Cross multiply
    85,039.27x = 127,558.65 × 40,655.65
  4. Step 4: Simplify right side
    85,039.27x = 5,185,979,571.43
  5. Step 5: Solve for x
    x = 5,185,979,571.43/85,039.27
  6. Step 6: Final answer
    x = 60,983.35

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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.