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Finding the Fourth Proportional to 80,964.53, 121,446.80 and 28,374.01

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Solution

The fourth proportional to 80,964.53, 121,446.80 and 28,374.01 is: 42,561.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,964.53 : 121,446.80 = 28,374.01 : x
  2. Step 2: Convert to fraction form
    80,964.53/121,446.80 = 28,374.01/x
  3. Step 3: Cross multiply
    80,964.53x = 121,446.80 × 28,374.01
  4. Step 4: Simplify right side
    80,964.53x = 3,445,932,378.58
  5. Step 5: Solve for x
    x = 3,445,932,378.58/80,964.53
  6. Step 6: Final answer
    x = 42,561.01

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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.