Home / 85,739.83-118,325.21-51,747.77

Finding the Fourth Proportional to 85,739.83, 118,325.21 and 51,747.77

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Solution

The fourth proportional to 85,739.83, 118,325.21 and 51,747.77 is: 71,414.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,739.83 : 118,325.21 = 51,747.77 : x
  2. Step 2: Convert to fraction form
    85,739.83/118,325.21 = 51,747.77/x
  3. Step 3: Cross multiply
    85,739.83x = 118,325.21 × 51,747.77
  4. Step 4: Simplify right side
    85,739.83x = 6,123,065,789.36
  5. Step 5: Solve for x
    x = 6,123,065,789.36/85,739.83
  6. Step 6: Final answer
    x = 71,414.49

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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.