Home / 55,139.40-82,709.10-54,264.60

Finding the Fourth Proportional to 55,139.40, 82,709.10 and 54,264.60

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Solution

The fourth proportional to 55,139.40, 82,709.10 and 54,264.60 is: 81,396.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,139.40 : 82,709.10 = 54,264.60 : x
  2. Step 2: Convert to fraction form
    55,139.40/82,709.10 = 54,264.60/x
  3. Step 3: Cross multiply
    55,139.40x = 82,709.10 × 54,264.60
  4. Step 4: Simplify right side
    55,139.40x = 4,488,176,227.86
  5. Step 5: Solve for x
    x = 4,488,176,227.86/55,139.40
  6. Step 6: Final answer
    x = 81,396.90

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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.