Home / 56,738.20-85,139.70-39,220.60

Finding the Fourth Proportional to 56,738.20, 85,139.70 and 39,220.60

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Solution

The fourth proportional to 56,738.20, 85,139.70 and 39,220.60 is: 58,853.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,738.20 : 85,139.70 = 39,220.60 : x
  2. Step 2: Convert to fraction form
    56,738.20/85,139.70 = 39,220.60/x
  3. Step 3: Cross multiply
    56,738.20x = 85,139.70 × 39,220.60
  4. Step 4: Simplify right side
    56,738.20x = 3,339,230,117.82
  5. Step 5: Solve for x
    x = 3,339,230,117.82/56,738.20
  6. Step 6: Final answer
    x = 58,853.30

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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.