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Finding the Fourth Proportional to 57,915.26, 86,736.81 and 28,240.06

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Solution

The fourth proportional to 57,915.26, 86,736.81 and 28,240.06 is: 42,293.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,915.26 : 86,736.81 = 28,240.06 : x
  2. Step 2: Convert to fraction form
    57,915.26/86,736.81 = 28,240.06/x
  3. Step 3: Cross multiply
    57,915.26x = 86,736.81 × 28,240.06
  4. Step 4: Simplify right side
    57,915.26x = 2,449,452,718.61
  5. Step 5: Solve for x
    x = 2,449,452,718.61/57,915.26
  6. Step 6: Final answer
    x = 42,293.74

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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.