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Finding the Fourth Proportional to 57,201.55, 85,801.88 and 17,220.40

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Solution

The fourth proportional to 57,201.55, 85,801.88 and 17,220.40 is: 25,830.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,201.55 : 85,801.88 = 17,220.40 : x
  2. Step 2: Convert to fraction form
    57,201.55/85,801.88 = 17,220.40/x
  3. Step 3: Cross multiply
    57,201.55x = 85,801.88 × 17,220.40
  4. Step 4: Simplify right side
    57,201.55x = 1,477,542,522.90
  5. Step 5: Solve for x
    x = 1,477,542,522.90/57,201.55
  6. Step 6: Final answer
    x = 25,830.46

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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.