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Finding the Fourth Proportional to 57,515.76, 86,273.32 and 45,851.76

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Solution

The fourth proportional to 57,515.76, 86,273.32 and 45,851.76 is: 68,777.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,515.76 : 86,273.32 = 45,851.76 : x
  2. Step 2: Convert to fraction form
    57,515.76/86,273.32 = 45,851.76/x
  3. Step 3: Cross multiply
    57,515.76x = 86,273.32 × 45,851.76
  4. Step 4: Simplify right side
    57,515.76x = 3,955,783,563.04
  5. Step 5: Solve for x
    x = 3,955,783,563.04/57,515.76
  6. Step 6: Final answer
    x = 68,777.38

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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.