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Finding the Fourth Proportional to 79,189.80, 109,283.31 and 43,377.51

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Solution

The fourth proportional to 79,189.80, 109,283.31 and 43,377.51 is: 59,861.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,189.80 : 109,283.31 = 43,377.51 : x
  2. Step 2: Convert to fraction form
    79,189.80/109,283.31 = 43,377.51/x
  3. Step 3: Cross multiply
    79,189.80x = 109,283.31 × 43,377.51
  4. Step 4: Simplify right side
    79,189.80x = 4,740,437,872.36
  5. Step 5: Solve for x
    x = 4,740,437,872.36/79,189.80
  6. Step 6: Final answer
    x = 59,861.72

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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.