Home / 85,085.91-127,434.47-40,743.81

Finding the Fourth Proportional to 85,085.91, 127,434.47 and 40,743.81

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Solution

The fourth proportional to 85,085.91, 127,434.47 and 40,743.81 is: 61,022.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,085.91 : 127,434.47 = 40,743.81 : x
  2. Step 2: Convert to fraction form
    85,085.91/127,434.47 = 40,743.81/x
  3. Step 3: Cross multiply
    85,085.91x = 127,434.47 × 40,743.81
  4. Step 4: Simplify right side
    85,085.91x = 5,192,165,629.41
  5. Step 5: Solve for x
    x = 5,192,165,629.41/85,085.91
  6. Step 6: Final answer
    x = 61,022.63

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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.