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Finding the Fourth Proportional to 57,293.40, 85,915.80 and 27,720.30

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Solution

The fourth proportional to 57,293.40, 85,915.80 and 27,720.30 is: 41,568.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,293.40 : 85,915.80 = 27,720.30 : x
  2. Step 2: Convert to fraction form
    57,293.40/85,915.80 = 27,720.30/x
  3. Step 3: Cross multiply
    57,293.40x = 85,915.80 × 27,720.30
  4. Step 4: Simplify right side
    57,293.40x = 2,381,611,750.74
  5. Step 5: Solve for x
    x = 2,381,611,750.74/57,293.40
  6. Step 6: Final answer
    x = 41,568.69

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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.