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Finding the Fourth Proportional to 53,739.99, 80,644.95 and 20,460.33

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Solution

The fourth proportional to 53,739.99, 80,644.95 and 20,460.33 is: 30,703.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,739.99 : 80,644.95 = 20,460.33 : x
  2. Step 2: Convert to fraction form
    53,739.99/80,644.95 = 20,460.33/x
  3. Step 3: Cross multiply
    53,739.99x = 80,644.95 × 20,460.33
  4. Step 4: Simplify right side
    53,739.99x = 1,650,022,289.83
  5. Step 5: Solve for x
    x = 1,650,022,289.83/53,739.99
  6. Step 6: Final answer
    x = 30,703.81

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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.