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Finding the Fourth Proportional to 101,605.01, 152,501.07 and 51,720.75

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Solution

The fourth proportional to 101,605.01, 152,501.07 and 51,720.75 is: 77,628.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,605.01 : 152,501.07 = 51,720.75 : x
  2. Step 2: Convert to fraction form
    101,605.01/152,501.07 = 51,720.75/x
  3. Step 3: Cross multiply
    101,605.01x = 152,501.07 × 51,720.75
  4. Step 4: Simplify right side
    101,605.01x = 7,887,469,716.20
  5. Step 5: Solve for x
    x = 7,887,469,716.20/101,605.01
  6. Step 6: Final answer
    x = 77,628.75

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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.