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Finding the Fourth Proportional to 53,780.52, 80,670.80 and 20,948.52

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Solution

The fourth proportional to 53,780.52, 80,670.80 and 20,948.52 is: 31,422.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,780.52 : 80,670.80 = 20,948.52 : x
  2. Step 2: Convert to fraction form
    53,780.52/80,670.80 = 20,948.52/x
  3. Step 3: Cross multiply
    53,780.52x = 80,670.80 × 20,948.52
  4. Step 4: Simplify right side
    53,780.52x = 1,689,933,867.22
  5. Step 5: Solve for x
    x = 1,689,933,867.22/53,780.52
  6. Step 6: Final answer
    x = 31,422.79

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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.