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Finding the Fourth Proportional to 57,208.40, 85,820.70 and 17,761.40

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Solution

The fourth proportional to 57,208.40, 85,820.70 and 17,761.40 is: 26,644.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,208.40 : 85,820.70 = 17,761.40 : x
  2. Step 2: Convert to fraction form
    57,208.40/85,820.70 = 17,761.40/x
  3. Step 3: Cross multiply
    57,208.40x = 85,820.70 × 17,761.40
  4. Step 4: Simplify right side
    57,208.40x = 1,524,295,780.98
  5. Step 5: Solve for x
    x = 1,524,295,780.98/57,208.40
  6. Step 6: Final answer
    x = 26,644.61

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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.