Home / 53,693.42-80,521.86-20,405.48

Finding the Fourth Proportional to 53,693.42, 80,521.86 and 20,405.48

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Solution

The fourth proportional to 53,693.42, 80,521.86 and 20,405.48 is: 30,601.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,693.42 : 80,521.86 = 20,405.48 : x
  2. Step 2: Convert to fraction form
    53,693.42/80,521.86 = 20,405.48/x
  3. Step 3: Cross multiply
    53,693.42x = 80,521.86 × 20,405.48
  4. Step 4: Simplify right side
    53,693.42x = 1,643,087,203.79
  5. Step 5: Solve for x
    x = 1,643,087,203.79/53,693.42
  6. Step 6: Final answer
    x = 30,601.28

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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.