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Finding the Fourth Proportional to 57,310.60, 85,965.90 and 54,030.10

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Solution

The fourth proportional to 57,310.60, 85,965.90 and 54,030.10 is: 81,045.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,310.60 : 85,965.90 = 54,030.10 : x
  2. Step 2: Convert to fraction form
    57,310.60/85,965.90 = 54,030.10/x
  3. Step 3: Cross multiply
    57,310.60x = 85,965.90 × 54,030.10
  4. Step 4: Simplify right side
    57,310.60x = 4,644,746,173.59
  5. Step 5: Solve for x
    x = 4,644,746,173.59/57,310.60
  6. Step 6: Final answer
    x = 81,045.15

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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.