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Finding the Fourth Proportional to 115,059, 172,339.22 and 55,770.64

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Solution

The fourth proportional to 115,059, 172,339.22 and 55,770.64 is: 83,535.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,059 : 172,339.22 = 55,770.64 : x
  2. Step 2: Convert to fraction form
    115,059/172,339.22 = 55,770.64/x
  3. Step 3: Cross multiply
    115,059x = 172,339.22 × 55,770.64
  4. Step 4: Simplify right side
    115,059x = 9,611,468,596.50
  5. Step 5: Solve for x
    x = 9,611,468,596.50/115,059
  6. Step 6: Final answer
    x = 83,535.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.