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Finding the Fourth Proportional to 57,402.99, 79,217.08 and 31,562.63

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Solution

The fourth proportional to 57,402.99, 79,217.08 and 31,562.63 is: 43,556.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,402.99 : 79,217.08 = 31,562.63 : x
  2. Step 2: Convert to fraction form
    57,402.99/79,217.08 = 31,562.63/x
  3. Step 3: Cross multiply
    57,402.99x = 79,217.08 × 31,562.63
  4. Step 4: Simplify right side
    57,402.99x = 2,500,299,385.72
  5. Step 5: Solve for x
    x = 2,500,299,385.72/57,402.99
  6. Step 6: Final answer
    x = 43,556.95

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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.