Home / 81,921.51-122,805.72-44,426.61

Finding the Fourth Proportional to 81,921.51, 122,805.72 and 44,426.61

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Solution

The fourth proportional to 81,921.51, 122,805.72 and 44,426.61 is: 66,598.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,921.51 : 122,805.72 = 44,426.61 : x
  2. Step 2: Convert to fraction form
    81,921.51/122,805.72 = 44,426.61/x
  3. Step 3: Cross multiply
    81,921.51x = 122,805.72 × 44,426.61
  4. Step 4: Simplify right side
    81,921.51x = 5,455,841,828.21
  5. Step 5: Solve for x
    x = 5,455,841,828.21/81,921.51
  6. Step 6: Final answer
    x = 66,598.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.