Home / 85,789.36-118,241.46-57,057.64

Finding the Fourth Proportional to 85,789.36, 118,241.46 and 57,057.64

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Solution

The fourth proportional to 85,789.36, 118,241.46 and 57,057.64 is: 78,641.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,789.36 : 118,241.46 = 57,057.64 : x
  2. Step 2: Convert to fraction form
    85,789.36/118,241.46 = 57,057.64/x
  3. Step 3: Cross multiply
    85,789.36x = 118,241.46 × 57,057.64
  4. Step 4: Simplify right side
    85,789.36x = 6,746,578,657.75
  5. Step 5: Solve for x
    x = 6,746,578,657.75/85,789.36
  6. Step 6: Final answer
    x = 78,641.21

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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.