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Finding the Fourth Proportional to 57,257.70, 85,886.55 and 50,915.40

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Solution

The fourth proportional to 57,257.70, 85,886.55 and 50,915.40 is: 76,373.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,257.70 : 85,886.55 = 50,915.40 : x
  2. Step 2: Convert to fraction form
    57,257.70/85,886.55 = 50,915.40/x
  3. Step 3: Cross multiply
    57,257.70x = 85,886.55 × 50,915.40
  4. Step 4: Simplify right side
    57,257.70x = 4,372,948,047.87
  5. Step 5: Solve for x
    x = 4,372,948,047.87/57,257.70
  6. Step 6: Final answer
    x = 76,373.10

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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.