Home / 57,320.20-85,980.30-38,657.80

Finding the Fourth Proportional to 57,320.20, 85,980.30 and 38,657.80

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Solution

The fourth proportional to 57,320.20, 85,980.30 and 38,657.80 is: 57,986.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,320.20 : 85,980.30 = 38,657.80 : x
  2. Step 2: Convert to fraction form
    57,320.20/85,980.30 = 38,657.80/x
  3. Step 3: Cross multiply
    57,320.20x = 85,980.30 × 38,657.80
  4. Step 4: Simplify right side
    57,320.20x = 3,323,809,241.34
  5. Step 5: Solve for x
    x = 3,323,809,241.34/57,320.20
  6. Step 6: Final answer
    x = 57,986.70

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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.