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Finding the Fourth Proportional to 79,480.10, 109,794.48 and 75,281.06

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Solution

The fourth proportional to 79,480.10, 109,794.48 and 75,281.06 is: 103,993.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,480.10 : 109,794.48 = 75,281.06 : x
  2. Step 2: Convert to fraction form
    79,480.10/109,794.48 = 75,281.06/x
  3. Step 3: Cross multiply
    79,480.10x = 109,794.48 × 75,281.06
  4. Step 4: Simplify right side
    79,480.10x = 8,265,444,836.55
  5. Step 5: Solve for x
    x = 8,265,444,836.55/79,480.10
  6. Step 6: Final answer
    x = 103,993.89

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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.