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Finding the Fourth Proportional to 79,763.96, 119,782.38 and 53,280.14

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Solution

The fourth proportional to 79,763.96, 119,782.38 and 53,280.14 is: 80,011.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,763.96 : 119,782.38 = 53,280.14 : x
  2. Step 2: Convert to fraction form
    79,763.96/119,782.38 = 53,280.14/x
  3. Step 3: Cross multiply
    79,763.96x = 119,782.38 × 53,280.14
  4. Step 4: Simplify right side
    79,763.96x = 6,382,021,975.93
  5. Step 5: Solve for x
    x = 6,382,021,975.93/79,763.96
  6. Step 6: Final answer
    x = 80,011.35

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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.