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Finding the Fourth Proportional to 79,842, 119,762.52 and 20,677.52

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Solution

The fourth proportional to 79,842, 119,762.52 and 20,677.52 is: 31,016.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,842 : 119,762.52 = 20,677.52 : x
  2. Step 2: Convert to fraction form
    79,842/119,762.52 = 20,677.52/x
  3. Step 3: Cross multiply
    79,842x = 119,762.52 × 20,677.52
  4. Step 4: Simplify right side
    79,842x = 2,476,391,902.55
  5. Step 5: Solve for x
    x = 2,476,391,902.55/79,842
  6. Step 6: Final answer
    x = 31,016.16

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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.