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Finding the Fourth Proportional to 57,107.84, 78,801.86 and 31,612.28

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Solution

The fourth proportional to 57,107.84, 78,801.86 and 31,612.28 is: 43,621.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,107.84 : 78,801.86 = 31,612.28 : x
  2. Step 2: Convert to fraction form
    57,107.84/78,801.86 = 31,612.28/x
  3. Step 3: Cross multiply
    57,107.84x = 78,801.86 × 31,612.28
  4. Step 4: Simplify right side
    57,107.84x = 2,491,106,147.86
  5. Step 5: Solve for x
    x = 2,491,106,147.86/57,107.84
  6. Step 6: Final answer
    x = 43,621.09

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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.