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Finding the Fourth Proportional to 57,275.60, 79,037.60 and 31,781.67

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Solution

The fourth proportional to 57,275.60, 79,037.60 and 31,781.67 is: 43,857.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,275.60 : 79,037.60 = 31,781.67 : x
  2. Step 2: Convert to fraction form
    57,275.60/79,037.60 = 31,781.67/x
  3. Step 3: Cross multiply
    57,275.60x = 79,037.60 × 31,781.67
  4. Step 4: Simplify right side
    57,275.60x = 2,511,946,761.88
  5. Step 5: Solve for x
    x = 2,511,946,761.88/57,275.60
  6. Step 6: Final answer
    x = 43,857.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.