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Finding the Fourth Proportional to 79,189.77, 109,281.93 and 43,381.08

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Solution

The fourth proportional to 79,189.77, 109,281.93 and 43,381.08 is: 59,865.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,189.77 : 109,281.93 = 43,381.08 : x
  2. Step 2: Convert to fraction form
    79,189.77/109,281.93 = 43,381.08/x
  3. Step 3: Cross multiply
    79,189.77x = 109,281.93 × 43,381.08
  4. Step 4: Simplify right side
    79,189.77x = 4,740,768,147.88
  5. Step 5: Solve for x
    x = 4,740,768,147.88/79,189.77
  6. Step 6: Final answer
    x = 59,865.92

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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.