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Finding the Fourth Proportional to 53,694.69, 80,542.04 and 20,406.93

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Solution

The fourth proportional to 53,694.69, 80,542.04 and 20,406.93 is: 30,610.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,694.69 : 80,542.04 = 20,406.93 : x
  2. Step 2: Convert to fraction form
    53,694.69/80,542.04 = 20,406.93/x
  3. Step 3: Cross multiply
    53,694.69x = 80,542.04 × 20,406.93
  4. Step 4: Simplify right side
    53,694.69x = 1,643,615,670.30
  5. Step 5: Solve for x
    x = 1,643,615,670.30/53,694.69
  6. Step 6: Final answer
    x = 30,610.40

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1.5x scale

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.