Home / 79,664.06-119,412.40-40,138.28

Finding the Fourth Proportional to 79,664.06, 119,412.40 and 40,138.28

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Solution

The fourth proportional to 79,664.06, 119,412.40 and 40,138.28 is: 60,165.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,664.06 : 119,412.40 = 40,138.28 : x
  2. Step 2: Convert to fraction form
    79,664.06/119,412.40 = 40,138.28/x
  3. Step 3: Cross multiply
    79,664.06x = 119,412.40 × 40,138.28
  4. Step 4: Simplify right side
    79,664.06x = 4,793,008,956.90
  5. Step 5: Solve for x
    x = 4,793,008,956.90/79,664.06
  6. Step 6: Final answer
    x = 60,165.26

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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.