Home / 81,628.16-112,606.62-51,379.52

Finding the Fourth Proportional to 81,628.16, 112,606.62 and 51,379.52

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Solution

The fourth proportional to 81,628.16, 112,606.62 and 51,379.52 is: 70,878.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,628.16 : 112,606.62 = 51,379.52 : x
  2. Step 2: Convert to fraction form
    81,628.16/112,606.62 = 51,379.52/x
  3. Step 3: Cross multiply
    81,628.16x = 112,606.62 × 51,379.52
  4. Step 4: Simplify right side
    81,628.16x = 5,785,674,084.42
  5. Step 5: Solve for x
    x = 5,785,674,084.42/81,628.16
  6. Step 6: Final answer
    x = 70,878.41

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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.