Home / 53,439.40-80,140.20-18,370.90

Finding the Fourth Proportional to 53,439.40, 80,140.20 and 18,370.90

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Solution

The fourth proportional to 53,439.40, 80,140.20 and 18,370.90 is: 27,549.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,439.40 : 80,140.20 = 18,370.90 : x
  2. Step 2: Convert to fraction form
    53,439.40/80,140.20 = 18,370.90/x
  3. Step 3: Cross multiply
    53,439.40x = 80,140.20 × 18,370.90
  4. Step 4: Simplify right side
    53,439.40x = 1,472,247,600.18
  5. Step 5: Solve for x
    x = 1,472,247,600.18/53,439.40
  6. Step 6: Final answer
    x = 27,549.85

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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.