Home / 83,412.31-115,107.69-47,601.40

Finding the Fourth Proportional to 83,412.31, 115,107.69 and 47,601.40

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Solution

The fourth proportional to 83,412.31, 115,107.69 and 47,601.40 is: 65,689.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,412.31 : 115,107.69 = 47,601.40 : x
  2. Step 2: Convert to fraction form
    83,412.31/115,107.69 = 47,601.40/x
  3. Step 3: Cross multiply
    83,412.31x = 115,107.69 × 47,601.40
  4. Step 4: Simplify right side
    83,412.31x = 5,479,287,194.77
  5. Step 5: Solve for x
    x = 5,479,287,194.77/83,412.31
  6. Step 6: Final answer
    x = 65,689.19

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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.