Home / 81,304.32-121,956.47-53,595.84

Finding the Fourth Proportional to 81,304.32, 121,956.47 and 53,595.84

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Solution

The fourth proportional to 81,304.32, 121,956.47 and 53,595.84 is: 80,393.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,304.32 : 121,956.47 = 53,595.84 : x
  2. Step 2: Convert to fraction form
    81,304.32/121,956.47 = 53,595.84/x
  3. Step 3: Cross multiply
    81,304.32x = 121,956.47 × 53,595.84
  4. Step 4: Simplify right side
    81,304.32x = 6,536,359,453.08
  5. Step 5: Solve for x
    x = 6,536,359,453.08/81,304.32
  6. Step 6: Final answer
    x = 80,393.75

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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.