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Finding the Fourth Proportional to 52,694.80, 72,720.06 and 30,035.90

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Solution

The fourth proportional to 52,694.80, 72,720.06 and 30,035.90 is: 41,450.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,694.80 : 72,720.06 = 30,035.90 : x
  2. Step 2: Convert to fraction form
    52,694.80/72,720.06 = 30,035.90/x
  3. Step 3: Cross multiply
    52,694.80x = 72,720.06 × 30,035.90
  4. Step 4: Simplify right side
    52,694.80x = 2,184,212,450.15
  5. Step 5: Solve for x
    x = 2,184,212,450.15/52,694.80
  6. Step 6: Final answer
    x = 41,450.25

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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.