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Finding the Fourth Proportional to 57,103.30, 78,789.27 and 33,216.40

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Solution

The fourth proportional to 57,103.30, 78,789.27 and 33,216.40 is: 45,830.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,103.30 : 78,789.27 = 33,216.40 : x
  2. Step 2: Convert to fraction form
    57,103.30/78,789.27 = 33,216.40/x
  3. Step 3: Cross multiply
    57,103.30x = 78,789.27 × 33,216.40
  4. Step 4: Simplify right side
    57,103.30x = 2,617,095,908.03
  5. Step 5: Solve for x
    x = 2,617,095,908.03/57,103.30
  6. Step 6: Final answer
    x = 45,830.90

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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.