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Finding the Fourth Proportional to 57,331.60, 85,851.60 and 54,707.20

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Solution

The fourth proportional to 57,331.60, 85,851.60 and 54,707.20 is: 81,921.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,331.60 : 85,851.60 = 54,707.20 : x
  2. Step 2: Convert to fraction form
    57,331.60/85,851.60 = 54,707.20/x
  3. Step 3: Cross multiply
    57,331.60x = 85,851.60 × 54,707.20
  4. Step 4: Simplify right side
    57,331.60x = 4,696,700,651.52
  5. Step 5: Solve for x
    x = 4,696,700,651.52/57,331.60
  6. Step 6: Final answer
    x = 81,921.67

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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.