Home / 83,412.28-115,107.84-45,686.56

Finding the Fourth Proportional to 83,412.28, 115,107.84 and 45,686.56

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Solution

The fourth proportional to 83,412.28, 115,107.84 and 45,686.56 is: 63,046.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,412.28 : 115,107.84 = 45,686.56 : x
  2. Step 2: Convert to fraction form
    83,412.28/115,107.84 = 45,686.56/x
  3. Step 3: Cross multiply
    83,412.28x = 115,107.84 × 45,686.56
  4. Step 4: Simplify right side
    83,412.28x = 5,258,881,238.63
  5. Step 5: Solve for x
    x = 5,258,881,238.63/83,412.28
  6. Step 6: Final answer
    x = 63,046.85

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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.