Home / 81,806.19-122,670-48,530.58

Finding the Fourth Proportional to 81,806.19, 122,670 and 48,530.58

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Solution

The fourth proportional to 81,806.19, 122,670 and 48,530.58 is: 72,772.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,806.19 : 122,670 = 48,530.58 : x
  2. Step 2: Convert to fraction form
    81,806.19/122,670 = 48,530.58/x
  3. Step 3: Cross multiply
    81,806.19x = 122,670 × 48,530.58
  4. Step 4: Simplify right side
    81,806.19x = 5,953,246,248.60
  5. Step 5: Solve for x
    x = 5,953,246,248.60/81,806.19
  6. Step 6: Final answer
    x = 72,772.56

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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.