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Finding the Fourth Proportional to 39,851.50, 54,995.07 and 22,187.50

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Solution

The fourth proportional to 39,851.50, 54,995.07 and 22,187.50 is: 30,618.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,851.50 : 54,995.07 = 22,187.50 : x
  2. Step 2: Convert to fraction form
    39,851.50/54,995.07 = 22,187.50/x
  3. Step 3: Cross multiply
    39,851.50x = 54,995.07 × 22,187.50
  4. Step 4: Simplify right side
    39,851.50x = 1,220,203,115.63
  5. Step 5: Solve for x
    x = 1,220,203,115.63/39,851.50
  6. Step 6: Final answer
    x = 30,618.75

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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.