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Finding the Fourth Proportional to 57,399.42, 79,210.64 and 31,905.12

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Solution

The fourth proportional to 57,399.42, 79,210.64 and 31,905.12 is: 44,028.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,399.42 : 79,210.64 = 31,905.12 : x
  2. Step 2: Convert to fraction form
    57,399.42/79,210.64 = 31,905.12/x
  3. Step 3: Cross multiply
    57,399.42x = 79,210.64 × 31,905.12
  4. Step 4: Simplify right side
    57,399.42x = 2,527,224,974.48
  5. Step 5: Solve for x
    x = 2,527,224,974.48/57,399.42
  6. Step 6: Final answer
    x = 44,028.75

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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.