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Finding the Fourth Proportional to 57,209.60, 85,830.60 and 17,770.70

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Solution

The fourth proportional to 57,209.60, 85,830.60 and 17,770.70 is: 26,661.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,209.60 : 85,830.60 = 17,770.70 : x
  2. Step 2: Convert to fraction form
    57,209.60/85,830.60 = 17,770.70/x
  3. Step 3: Cross multiply
    57,209.60x = 85,830.60 × 17,770.70
  4. Step 4: Simplify right side
    57,209.60x = 1,525,269,843.42
  5. Step 5: Solve for x
    x = 1,525,269,843.42/57,209.60
  6. Step 6: Final answer
    x = 26,661.08

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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.