Home / 57,077.12-78,761.05-38,642.73

Finding the Fourth Proportional to 57,077.12, 78,761.05 and 38,642.73

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Solution

The fourth proportional to 57,077.12, 78,761.05 and 38,642.73 is: 53,323.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,077.12 : 78,761.05 = 38,642.73 : x
  2. Step 2: Convert to fraction form
    57,077.12/78,761.05 = 38,642.73/x
  3. Step 3: Cross multiply
    57,077.12x = 78,761.05 × 38,642.73
  4. Step 4: Simplify right side
    57,077.12x = 3,043,541,989.67
  5. Step 5: Solve for x
    x = 3,043,541,989.67/57,077.12
  6. Step 6: Final answer
    x = 53,323.33

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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.