Home / 57,947.20-80,004-39,827.68

Finding the Fourth Proportional to 57,947.20, 80,004 and 39,827.68

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Solution

The fourth proportional to 57,947.20, 80,004 and 39,827.68 is: 54,987.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,947.20 : 80,004 = 39,827.68 : x
  2. Step 2: Convert to fraction form
    57,947.20/80,004 = 39,827.68/x
  3. Step 3: Cross multiply
    57,947.20x = 80,004 × 39,827.68
  4. Step 4: Simplify right side
    57,947.20x = 3,186,373,710.72
  5. Step 5: Solve for x
    x = 3,186,373,710.72/57,947.20
  6. Step 6: Final answer
    x = 54,987.54

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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.