Home / 81,724.74-122,513.14-56,776.48

Finding the Fourth Proportional to 81,724.74, 122,513.14 and 56,776.48

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Solution

The fourth proportional to 81,724.74, 122,513.14 and 56,776.48 is: 85,113.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,724.74 : 122,513.14 = 56,776.48 : x
  2. Step 2: Convert to fraction form
    81,724.74/122,513.14 = 56,776.48/x
  3. Step 3: Cross multiply
    81,724.74x = 122,513.14 × 56,776.48
  4. Step 4: Simplify right side
    81,724.74x = 6,955,864,842.95
  5. Step 5: Solve for x
    x = 6,955,864,842.95/81,724.74
  6. Step 6: Final answer
    x = 85,113.33

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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.