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Finding the Fourth Proportional to 79,564.95, 119,338.50 and 20,402.01

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Solution

The fourth proportional to 79,564.95, 119,338.50 and 20,402.01 is: 30,600.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,564.95 : 119,338.50 = 20,402.01 : x
  2. Step 2: Convert to fraction form
    79,564.95/119,338.50 = 20,402.01/x
  3. Step 3: Cross multiply
    79,564.95x = 119,338.50 × 20,402.01
  4. Step 4: Simplify right side
    79,564.95x = 2,434,745,270.39
  5. Step 5: Solve for x
    x = 2,434,745,270.39/79,564.95
  6. Step 6: Final answer
    x = 30,600.73

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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.