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Finding the Fourth Proportional to 80,061.51, 119,975.61 and 54,672.87

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Solution

The fourth proportional to 80,061.51, 119,975.61 and 54,672.87 is: 81,929.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,061.51 : 119,975.61 = 54,672.87 : x
  2. Step 2: Convert to fraction form
    80,061.51/119,975.61 = 54,672.87/x
  3. Step 3: Cross multiply
    80,061.51x = 119,975.61 × 54,672.87
  4. Step 4: Simplify right side
    80,061.51x = 6,559,410,928.70
  5. Step 5: Solve for x
    x = 6,559,410,928.70/80,061.51
  6. Step 6: Final answer
    x = 81,929.64

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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.