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Finding the Fourth Proportional to 57,411.99, 79,227.81 and 31,918.86

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Solution

The fourth proportional to 57,411.99, 79,227.81 and 31,918.86 is: 44,047.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,411.99 : 79,227.81 = 31,918.86 : x
  2. Step 2: Convert to fraction form
    57,411.99/79,227.81 = 31,918.86/x
  3. Step 3: Cross multiply
    57,411.99x = 79,227.81 × 31,918.86
  4. Step 4: Simplify right side
    57,411.99x = 2,528,861,375.50
  5. Step 5: Solve for x
    x = 2,528,861,375.50/57,411.99
  6. Step 6: Final answer
    x = 44,047.62

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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.