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Finding the Fourth Proportional to 57,809.12, 86,671.62 and 39,042.63

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Solution

The fourth proportional to 57,809.12, 86,671.62 and 39,042.63 is: 58,535.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,809.12 : 86,671.62 = 39,042.63 : x
  2. Step 2: Convert to fraction form
    57,809.12/86,671.62 = 39,042.63/x
  3. Step 3: Cross multiply
    57,809.12x = 86,671.62 × 39,042.63
  4. Step 4: Simplify right side
    57,809.12x = 3,383,887,991.16
  5. Step 5: Solve for x
    x = 3,383,887,991.16/57,809.12
  6. Step 6: Final answer
    x = 58,535.54

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1.5x scale

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.