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Finding the Fourth Proportional to 57,379.42, 85,492.42 and 54,156.45

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Solution

The fourth proportional to 57,379.42, 85,492.42 and 54,156.45 is: 80,690.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,379.42 : 85,492.42 = 54,156.45 : x
  2. Step 2: Convert to fraction form
    57,379.42/85,492.42 = 54,156.45/x
  3. Step 3: Cross multiply
    57,379.42x = 85,492.42 × 54,156.45
  4. Step 4: Simplify right side
    57,379.42x = 4,629,965,969.11
  5. Step 5: Solve for x
    x = 4,629,965,969.11/57,379.42
  6. Step 6: Final answer
    x = 80,690.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.