Home / 56,857.57-85,286.35-31,915.13

Finding the Fourth Proportional to 56,857.57, 85,286.35 and 31,915.13

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Solution

The fourth proportional to 56,857.57, 85,286.35 and 31,915.13 is: 47,872.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,857.57 : 85,286.35 = 31,915.13 : x
  2. Step 2: Convert to fraction form
    56,857.57/85,286.35 = 31,915.13/x
  3. Step 3: Cross multiply
    56,857.57x = 85,286.35 × 31,915.13
  4. Step 4: Simplify right side
    56,857.57x = 2,721,924,947.48
  5. Step 5: Solve for x
    x = 2,721,924,947.48/56,857.57
  6. Step 6: Final answer
    x = 47,872.69

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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.