Home / 53,515.29-80,289.13-20,245.55

Finding the Fourth Proportional to 53,515.29, 80,289.13 and 20,245.55

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Solution

The fourth proportional to 53,515.29, 80,289.13 and 20,245.55 is: 30,374.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,515.29 : 80,289.13 = 20,245.55 : x
  2. Step 2: Convert to fraction form
    53,515.29/80,289.13 = 20,245.55/x
  3. Step 3: Cross multiply
    53,515.29x = 80,289.13 × 20,245.55
  4. Step 4: Simplify right side
    53,515.29x = 1,625,497,595.87
  5. Step 5: Solve for x
    x = 1,625,497,595.87/53,515.29
  6. Step 6: Final answer
    x = 30,374.45

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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.