Home / 81,927.62-112,999.75-61,785.35

Finding the Fourth Proportional to 81,927.62, 112,999.75 and 61,785.35

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Solution

The fourth proportional to 81,927.62, 112,999.75 and 61,785.35 is: 85,218.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,927.62 : 112,999.75 = 61,785.35 : x
  2. Step 2: Convert to fraction form
    81,927.62/112,999.75 = 61,785.35/x
  3. Step 3: Cross multiply
    81,927.62x = 112,999.75 × 61,785.35
  4. Step 4: Simplify right side
    81,927.62x = 6,981,728,384.20
  5. Step 5: Solve for x
    x = 6,981,728,384.20/81,927.62
  6. Step 6: Final answer
    x = 85,218.25

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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.