Home / 81,648.27-122,313.65-59,415.39

Finding the Fourth Proportional to 81,648.27, 122,313.65 and 59,415.39

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Solution

The fourth proportional to 81,648.27, 122,313.65 and 59,415.39 is: 89,007.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,648.27 : 122,313.65 = 59,415.39 : x
  2. Step 2: Convert to fraction form
    81,648.27/122,313.65 = 59,415.39/x
  3. Step 3: Cross multiply
    81,648.27x = 122,313.65 × 59,415.39
  4. Step 4: Simplify right side
    81,648.27x = 7,267,312,920.00
  5. Step 5: Solve for x
    x = 7,267,312,920.00/81,648.27
  6. Step 6: Final answer
    x = 89,007.56

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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.