Home / 81,588.96-122,353.53-28,267.17

Finding the Fourth Proportional to 81,588.96, 122,353.53 and 28,267.17

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Solution

The fourth proportional to 81,588.96, 122,353.53 and 28,267.17 is: 42,390.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,588.96 : 122,353.53 = 28,267.17 : x
  2. Step 2: Convert to fraction form
    81,588.96/122,353.53 = 28,267.17/x
  3. Step 3: Cross multiply
    81,588.96x = 122,353.53 × 28,267.17
  4. Step 4: Simplify right side
    81,588.96x = 3,458,588,032.61
  5. Step 5: Solve for x
    x = 3,458,588,032.61/81,588.96
  6. Step 6: Final answer
    x = 42,390.39

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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.