Home / 85,498.20-128,247.30-35,561.70

Finding the Fourth Proportional to 85,498.20, 128,247.30 and 35,561.70

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Solution

The fourth proportional to 85,498.20, 128,247.30 and 35,561.70 is: 53,342.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,498.20 : 128,247.30 = 35,561.70 : x
  2. Step 2: Convert to fraction form
    85,498.20/128,247.30 = 35,561.70/x
  3. Step 3: Cross multiply
    85,498.20x = 128,247.30 × 35,561.70
  4. Step 4: Simplify right side
    85,498.20x = 4,560,692,008.41
  5. Step 5: Solve for x
    x = 4,560,692,008.41/85,498.20
  6. Step 6: Final answer
    x = 53,342.55

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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.