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Finding the Fourth Proportional to 79,279.22, 109,401.12 and 45,281.03

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Solution

The fourth proportional to 79,279.22, 109,401.12 and 45,281.03 is: 62,485.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,279.22 : 109,401.12 = 45,281.03 : x
  2. Step 2: Convert to fraction form
    79,279.22/109,401.12 = 45,281.03/x
  3. Step 3: Cross multiply
    79,279.22x = 109,401.12 × 45,281.03
  4. Step 4: Simplify right side
    79,279.22x = 4,953,794,849.75
  5. Step 5: Solve for x
    x = 4,953,794,849.75/79,279.22
  6. Step 6: Final answer
    x = 62,485.41

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1.5x scale

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.