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Finding the Fourth Proportional to 79,157.16, 109,231.88 and 43,347.60

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Solution

The fourth proportional to 79,157.16, 109,231.88 and 43,347.60 is: 59,816.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,157.16 : 109,231.88 = 43,347.60 : x
  2. Step 2: Convert to fraction form
    79,157.16/109,231.88 = 43,347.60/x
  3. Step 3: Cross multiply
    79,157.16x = 109,231.88 × 43,347.60
  4. Step 4: Simplify right side
    79,157.16x = 4,734,939,624.75
  5. Step 5: Solve for x
    x = 4,734,939,624.75/79,157.16
  6. Step 6: Final answer
    x = 59,816.95

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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.