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Finding the Fourth Proportional to 84,668.80, 127,007.16 and 69,850.24

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Solution

The fourth proportional to 84,668.80, 127,007.16 and 69,850.24 is: 104,778.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,668.80 : 127,007.16 = 69,850.24 : x
  2. Step 2: Convert to fraction form
    84,668.80/127,007.16 = 69,850.24/x
  3. Step 3: Cross multiply
    84,668.80x = 127,007.16 × 69,850.24
  4. Step 4: Simplify right side
    84,668.80x = 8,871,480,607.72
  5. Step 5: Solve for x
    x = 8,871,480,607.72/84,668.80
  6. Step 6: Final answer
    x = 104,778.63

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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.