Home / 53,441.40-80,143.20-18,372.90

Finding the Fourth Proportional to 53,441.40, 80,143.20 and 18,372.90

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Solution

The fourth proportional to 53,441.40, 80,143.20 and 18,372.90 is: 27,552.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,441.40 : 80,143.20 = 18,372.90 : x
  2. Step 2: Convert to fraction form
    53,441.40/80,143.20 = 18,372.90/x
  3. Step 3: Cross multiply
    53,441.40x = 80,143.20 × 18,372.90
  4. Step 4: Simplify right side
    53,441.40x = 1,472,462,999.28
  5. Step 5: Solve for x
    x = 1,472,462,999.28/53,441.40
  6. Step 6: Final answer
    x = 27,552.85

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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.