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Finding the Fourth Proportional to 56,858.78, 85,228.59 and 31,862.18

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Solution

The fourth proportional to 56,858.78, 85,228.59 and 31,862.18 is: 47,759.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,858.78 : 85,228.59 = 31,862.18 : x
  2. Step 2: Convert to fraction form
    56,858.78/85,228.59 = 31,862.18/x
  3. Step 3: Cross multiply
    56,858.78x = 85,228.59 × 31,862.18
  4. Step 4: Simplify right side
    56,858.78x = 2,715,568,675.73
  5. Step 5: Solve for x
    x = 2,715,568,675.73/56,858.78
  6. Step 6: Final answer
    x = 47,759.88

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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.