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Finding the Fourth Proportional to 38,080.60, 57,114.60 and 12,779.80

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Solution

The fourth proportional to 38,080.60, 57,114.60 and 12,779.80 is: 19,167.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,080.60 : 57,114.60 = 12,779.80 : x
  2. Step 2: Convert to fraction form
    38,080.60/57,114.60 = 12,779.80/x
  3. Step 3: Cross multiply
    38,080.60x = 57,114.60 × 12,779.80
  4. Step 4: Simplify right side
    38,080.60x = 729,913,165.08
  5. Step 5: Solve for x
    x = 729,913,165.08/38,080.60
  6. Step 6: Final answer
    x = 19,167.59

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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.