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Finding the Fourth Proportional to 115,265, 172,855.88 and 48,710.28

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Solution

The fourth proportional to 115,265, 172,855.88 and 48,710.28 is: 73,047.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,265 : 172,855.88 = 48,710.28 : x
  2. Step 2: Convert to fraction form
    115,265/172,855.88 = 48,710.28/x
  3. Step 3: Cross multiply
    115,265x = 172,855.88 × 48,710.28
  4. Step 4: Simplify right side
    115,265x = 8,419,858,314.45
  5. Step 5: Solve for x
    x = 8,419,858,314.45/115,265
  6. Step 6: Final answer
    x = 73,047.83

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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.