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Finding the Fourth Proportional to 81,304.53, 121,956.80 and 53,596.05

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Solution

The fourth proportional to 81,304.53, 121,956.80 and 53,596.05 is: 80,394.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,304.53 : 121,956.80 = 53,596.05 : x
  2. Step 2: Convert to fraction form
    81,304.53/121,956.80 = 53,596.05/x
  3. Step 3: Cross multiply
    81,304.53x = 121,956.80 × 53,596.05
  4. Step 4: Simplify right side
    81,304.53x = 6,536,403,341.97
  5. Step 5: Solve for x
    x = 6,536,403,341.97/81,304.53
  6. Step 6: Final answer
    x = 80,394.08

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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.