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Finding the Fourth Proportional to 79,805.19, 119,665.65 and 35,412.60

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Solution

The fourth proportional to 79,805.19, 119,665.65 and 35,412.60 is: 53,100.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,805.19 : 119,665.65 = 35,412.60 : x
  2. Step 2: Convert to fraction form
    79,805.19/119,665.65 = 35,412.60/x
  3. Step 3: Cross multiply
    79,805.19x = 119,665.65 × 35,412.60
  4. Step 4: Simplify right side
    79,805.19x = 4,237,671,797.19
  5. Step 5: Solve for x
    x = 4,237,671,797.19/79,805.19
  6. Step 6: Final answer
    x = 53,100.20

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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.