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Finding the Fourth Proportional to 81,658.65, 112,455.61 and 73,523.01

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Solution

The fourth proportional to 81,658.65, 112,455.61 and 73,523.01 is: 101,251.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,658.65 : 112,455.61 = 73,523.01 : x
  2. Step 2: Convert to fraction form
    81,658.65/112,455.61 = 73,523.01/x
  3. Step 3: Cross multiply
    81,658.65x = 112,455.61 × 73,523.01
  4. Step 4: Simplify right side
    81,658.65x = 8,268,074,938.59
  5. Step 5: Solve for x
    x = 8,268,074,938.59/81,658.65
  6. Step 6: Final answer
    x = 101,251.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.