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Finding the Fourth Proportional to 57,222.56, 85,820.72 and 15,672.80

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Solution

The fourth proportional to 57,222.56, 85,820.72 and 15,672.80 is: 23,505.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,222.56 : 85,820.72 = 15,672.80 : x
  2. Step 2: Convert to fraction form
    57,222.56/85,820.72 = 15,672.80/x
  3. Step 3: Cross multiply
    57,222.56x = 85,820.72 × 15,672.80
  4. Step 4: Simplify right side
    57,222.56x = 1,345,050,980.42
  5. Step 5: Solve for x
    x = 1,345,050,980.42/57,222.56
  6. Step 6: Final answer
    x = 23,505.61

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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.