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Finding the Fourth Proportional to 57,240.80, 85,861.20 and 17,801.90

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Solution

The fourth proportional to 57,240.80, 85,861.20 and 17,801.90 is: 26,702.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,240.80 : 85,861.20 = 17,801.90 : x
  2. Step 2: Convert to fraction form
    57,240.80/85,861.20 = 17,801.90/x
  3. Step 3: Cross multiply
    57,240.80x = 85,861.20 × 17,801.90
  4. Step 4: Simplify right side
    57,240.80x = 1,528,492,496.28
  5. Step 5: Solve for x
    x = 1,528,492,496.28/57,240.80
  6. Step 6: Final answer
    x = 26,702.85

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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.