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Finding the Fourth Proportional to 57,612.80, 79,542.36 and 47,027.60

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Solution

The fourth proportional to 57,612.80, 79,542.36 and 47,027.60 is: 64,928.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,612.80 : 79,542.36 = 47,027.60 : x
  2. Step 2: Convert to fraction form
    57,612.80/79,542.36 = 47,027.60/x
  3. Step 3: Cross multiply
    57,612.80x = 79,542.36 × 47,027.60
  4. Step 4: Simplify right side
    57,612.80x = 3,740,686,289.14
  5. Step 5: Solve for x
    x = 3,740,686,289.14/57,612.80
  6. Step 6: Final answer
    x = 64,928.04

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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.