Home / 83,701.19-115,514.79-47,409.11

Finding the Fourth Proportional to 83,701.19, 115,514.79 and 47,409.11

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Solution

The fourth proportional to 83,701.19, 115,514.79 and 47,409.11 is: 65,428.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,701.19 : 115,514.79 = 47,409.11 : x
  2. Step 2: Convert to fraction form
    83,701.19/115,514.79 = 47,409.11/x
  3. Step 3: Cross multiply
    83,701.19x = 115,514.79 × 47,409.11
  4. Step 4: Simplify right side
    83,701.19x = 5,476,453,385.74
  5. Step 5: Solve for x
    x = 5,476,453,385.74/83,701.19
  6. Step 6: Final answer
    x = 65,428.62

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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.