Home / 53,438.70-80,147.12-18,381.09

Finding the Fourth Proportional to 53,438.70, 80,147.12 and 18,381.09

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Solution

The fourth proportional to 53,438.70, 80,147.12 and 18,381.09 is: 27,567.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,438.70 : 80,147.12 = 18,381.09 : x
  2. Step 2: Convert to fraction form
    53,438.70/80,147.12 = 18,381.09/x
  3. Step 3: Cross multiply
    53,438.70x = 80,147.12 × 18,381.09
  4. Step 4: Simplify right side
    53,438.70x = 1,473,191,334.06
  5. Step 5: Solve for x
    x = 1,473,191,334.06/53,438.70
  6. Step 6: Final answer
    x = 27,567.87

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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.