Home / 81,085.13-121,596.71-38,953.20

Finding the Fourth Proportional to 81,085.13, 121,596.71 and 38,953.20

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Solution

The fourth proportional to 81,085.13, 121,596.71 and 38,953.20 is: 58,414.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,085.13 : 121,596.71 = 38,953.20 : x
  2. Step 2: Convert to fraction form
    81,085.13/121,596.71 = 38,953.20/x
  3. Step 3: Cross multiply
    81,085.13x = 121,596.71 × 38,953.20
  4. Step 4: Simplify right side
    81,085.13x = 4,736,580,769.21
  5. Step 5: Solve for x
    x = 4,736,580,769.21/81,085.13
  6. Step 6: Final answer
    x = 58,414.92

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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.