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Finding the Fourth Proportional to 75,720.80, 104,493.98 and 43,454.04

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Solution

The fourth proportional to 75,720.80, 104,493.98 and 43,454.04 is: 59,966.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,720.80 : 104,493.98 = 43,454.04 : x
  2. Step 2: Convert to fraction form
    75,720.80/104,493.98 = 43,454.04/x
  3. Step 3: Cross multiply
    75,720.80x = 104,493.98 × 43,454.04
  4. Step 4: Simplify right side
    75,720.80x = 4,540,685,586.68
  5. Step 5: Solve for x
    x = 4,540,685,586.68/75,720.80
  6. Step 6: Final answer
    x = 59,966.16

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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.