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Finding the Fourth Proportional to 39,860.50, 55,007.50 and 23,103.22

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Solution

The fourth proportional to 39,860.50, 55,007.50 and 23,103.22 is: 31,882.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,860.50 : 55,007.50 = 23,103.22 : x
  2. Step 2: Convert to fraction form
    39,860.50/55,007.50 = 23,103.22/x
  3. Step 3: Cross multiply
    39,860.50x = 55,007.50 × 23,103.22
  4. Step 4: Simplify right side
    39,860.50x = 1,270,850,374.15
  5. Step 5: Solve for x
    x = 1,270,850,374.15/39,860.50
  6. Step 6: Final answer
    x = 31,882.45

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1.5x scale

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.