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Finding the Fourth Proportional to 79,909.59, 110,315.16 and 49,704.63

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Solution

The fourth proportional to 79,909.59, 110,315.16 and 49,704.63 is: 68,617.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,909.59 : 110,315.16 = 49,704.63 : x
  2. Step 2: Convert to fraction form
    79,909.59/110,315.16 = 49,704.63/x
  3. Step 3: Cross multiply
    79,909.59x = 110,315.16 × 49,704.63
  4. Step 4: Simplify right side
    79,909.59x = 5,483,174,211.19
  5. Step 5: Solve for x
    x = 5,483,174,211.19/79,909.59
  6. Step 6: Final answer
    x = 68,617.22

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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.