Home / 81,239.62-112,000.44-57,007.66

Finding the Fourth Proportional to 81,239.62, 112,000.44 and 57,007.66

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Solution

The fourth proportional to 81,239.62, 112,000.44 and 57,007.66 is: 78,593.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,239.62 : 112,000.44 = 57,007.66 : x
  2. Step 2: Convert to fraction form
    81,239.62/112,000.44 = 57,007.66/x
  3. Step 3: Cross multiply
    81,239.62x = 112,000.44 × 57,007.66
  4. Step 4: Simplify right side
    81,239.62x = 6,384,883,003.37
  5. Step 5: Solve for x
    x = 6,384,883,003.37/81,239.62
  6. Step 6: Final answer
    x = 78,593.22

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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.