Home / 81,693.24-122,425.80-44,172.40

Finding the Fourth Proportional to 81,693.24, 122,425.80 and 44,172.40

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Solution

The fourth proportional to 81,693.24, 122,425.80 and 44,172.40 is: 66,196.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,693.24 : 122,425.80 = 44,172.40 : x
  2. Step 2: Convert to fraction form
    81,693.24/122,425.80 = 44,172.40/x
  3. Step 3: Cross multiply
    81,693.24x = 122,425.80 × 44,172.40
  4. Step 4: Simplify right side
    81,693.24x = 5,407,841,407.92
  5. Step 5: Solve for x
    x = 5,407,841,407.92/81,693.24
  6. Step 6: Final answer
    x = 66,196.93

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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.