Home / 81,456.17-122,201.10-39,365.53

Finding the Fourth Proportional to 81,456.17, 122,201.10 and 39,365.53

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Solution

The fourth proportional to 81,456.17, 122,201.10 and 39,365.53 is: 59,056.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,456.17 : 122,201.10 = 39,365.53 : x
  2. Step 2: Convert to fraction form
    81,456.17/122,201.10 = 39,365.53/x
  3. Step 3: Cross multiply
    81,456.17x = 122,201.10 × 39,365.53
  4. Step 4: Simplify right side
    81,456.17x = 4,810,510,762.58
  5. Step 5: Solve for x
    x = 4,810,510,762.58/81,456.17
  6. Step 6: Final answer
    x = 59,056.44

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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.