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Finding the Fourth Proportional to 57,813.60, 86,736.60 and 28,232.40

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Solution

The fourth proportional to 57,813.60, 86,736.60 and 28,232.40 is: 42,356.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,813.60 : 86,736.60 = 28,232.40 : x
  2. Step 2: Convert to fraction form
    57,813.60/86,736.60 = 28,232.40/x
  3. Step 3: Cross multiply
    57,813.60x = 86,736.60 × 28,232.40
  4. Step 4: Simplify right side
    57,813.60x = 2,448,782,385.84
  5. Step 5: Solve for x
    x = 2,448,782,385.84/57,813.60
  6. Step 6: Final answer
    x = 42,356.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.