Home / 81,575.37-112,659.57-56,147.40

Finding the Fourth Proportional to 81,575.37, 112,659.57 and 56,147.40

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Solution

The fourth proportional to 81,575.37, 112,659.57 and 56,147.40 is: 77,542.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,575.37 : 112,659.57 = 56,147.40 : x
  2. Step 2: Convert to fraction form
    81,575.37/112,659.57 = 56,147.40/x
  3. Step 3: Cross multiply
    81,575.37x = 112,659.57 × 56,147.40
  4. Step 4: Simplify right side
    81,575.37x = 6,325,541,940.62
  5. Step 5: Solve for x
    x = 6,325,541,940.62/81,575.37
  6. Step 6: Final answer
    x = 77,542.30

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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.