Home / 81,578.48-122,341.82-55,451.12

Finding the Fourth Proportional to 81,578.48, 122,341.82 and 55,451.12

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Solution

The fourth proportional to 81,578.48, 122,341.82 and 55,451.12 is: 83,159.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,578.48 : 122,341.82 = 55,451.12 : x
  2. Step 2: Convert to fraction form
    81,578.48/122,341.82 = 55,451.12/x
  3. Step 3: Cross multiply
    81,578.48x = 122,341.82 × 55,451.12
  4. Step 4: Simplify right side
    81,578.48x = 6,783,990,941.84
  5. Step 5: Solve for x
    x = 6,783,990,941.84/81,578.48
  6. Step 6: Final answer
    x = 83,159.08

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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.