Home / 53,432.52-80,133.12-20,128.56

Finding the Fourth Proportional to 53,432.52, 80,133.12 and 20,128.56

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Solution

The fourth proportional to 53,432.52, 80,133.12 and 20,128.56 is: 30,186.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,432.52 : 80,133.12 = 20,128.56 : x
  2. Step 2: Convert to fraction form
    53,432.52/80,133.12 = 20,128.56/x
  3. Step 3: Cross multiply
    53,432.52x = 80,133.12 × 20,128.56
  4. Step 4: Simplify right side
    53,432.52x = 1,612,964,313.91
  5. Step 5: Solve for x
    x = 1,612,964,313.91/53,432.52
  6. Step 6: Final answer
    x = 30,186.94

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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.