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Finding the Fourth Proportional to 57,257.40, 85,894.20 and 17,810.40

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Solution

The fourth proportional to 57,257.40, 85,894.20 and 17,810.40 is: 26,718.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,257.40 : 85,894.20 = 17,810.40 : x
  2. Step 2: Convert to fraction form
    57,257.40/85,894.20 = 17,810.40/x
  3. Step 3: Cross multiply
    57,257.40x = 85,894.20 × 17,810.40
  4. Step 4: Simplify right side
    57,257.40x = 1,529,810,059.68
  5. Step 5: Solve for x
    x = 1,529,810,059.68/57,257.40
  6. Step 6: Final answer
    x = 26,718.12

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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.