Home / 57,935.68-86,915.72-19,988.39

Finding the Fourth Proportional to 57,935.68, 86,915.72 and 19,988.39

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Solution

The fourth proportional to 57,935.68, 86,915.72 and 19,988.39 is: 29,986.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,935.68 : 86,915.72 = 19,988.39 : x
  2. Step 2: Convert to fraction form
    57,935.68/86,915.72 = 19,988.39/x
  3. Step 3: Cross multiply
    57,935.68x = 86,915.72 × 19,988.39
  4. Step 4: Simplify right side
    57,935.68x = 1,737,305,308.49
  5. Step 5: Solve for x
    x = 1,737,305,308.49/57,935.68
  6. Step 6: Final answer
    x = 29,986.79

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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.