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Finding the Fourth Proportional to 39,125.76, 53,987.76 and 22,125.48

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Solution

The fourth proportional to 39,125.76, 53,987.76 and 22,125.48 is: 30,529.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,125.76 : 53,987.76 = 22,125.48 : x
  2. Step 2: Convert to fraction form
    39,125.76/53,987.76 = 22,125.48/x
  3. Step 3: Cross multiply
    39,125.76x = 53,987.76 × 22,125.48
  4. Step 4: Simplify right side
    39,125.76x = 1,194,505,104.12
  5. Step 5: Solve for x
    x = 1,194,505,104.12/39,125.76
  6. Step 6: Final answer
    x = 30,529.89

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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.