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Finding the Fourth Proportional to 57,405.68, 79,221.74 and 34,748.76

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Solution

The fourth proportional to 57,405.68, 79,221.74 and 34,748.76 is: 47,954.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,405.68 : 79,221.74 = 34,748.76 : x
  2. Step 2: Convert to fraction form
    57,405.68/79,221.74 = 34,748.76/x
  3. Step 3: Cross multiply
    57,405.68x = 79,221.74 × 34,748.76
  4. Step 4: Simplify right side
    57,405.68x = 2,752,857,056.30
  5. Step 5: Solve for x
    x = 2,752,857,056.30/57,405.68
  6. Step 6: Final answer
    x = 47,954.44

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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.