Home / 85,315.28-117,797.49-55,118.48

Finding the Fourth Proportional to 85,315.28, 117,797.49 and 55,118.48

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Solution

The fourth proportional to 85,315.28, 117,797.49 and 55,118.48 is: 76,103.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,315.28 : 117,797.49 = 55,118.48 : x
  2. Step 2: Convert to fraction form
    85,315.28/117,797.49 = 55,118.48/x
  3. Step 3: Cross multiply
    85,315.28x = 117,797.49 × 55,118.48
  4. Step 4: Simplify right side
    85,315.28x = 6,492,818,007.63
  5. Step 5: Solve for x
    x = 6,492,818,007.63/85,315.28
  6. Step 6: Final answer
    x = 76,103.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.