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Finding the Fourth Proportional to 79,267.65, 109,390.26 and 45,280.64

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Solution

The fourth proportional to 79,267.65, 109,390.26 and 45,280.64 is: 62,487.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,267.65 : 109,390.26 = 45,280.64 : x
  2. Step 2: Convert to fraction form
    79,267.65/109,390.26 = 45,280.64/x
  3. Step 3: Cross multiply
    79,267.65x = 109,390.26 × 45,280.64
  4. Step 4: Simplify right side
    79,267.65x = 4,953,260,435.62
  5. Step 5: Solve for x
    x = 4,953,260,435.62/79,267.65
  6. Step 6: Final answer
    x = 62,487.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.