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Finding the Fourth Proportional to 79,642.40, 119,379.72 and 40,116.44

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Solution

The fourth proportional to 79,642.40, 119,379.72 and 40,116.44 is: 60,132.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,642.40 : 119,379.72 = 40,116.44 : x
  2. Step 2: Convert to fraction form
    79,642.40/119,379.72 = 40,116.44/x
  3. Step 3: Cross multiply
    79,642.40x = 119,379.72 × 40,116.44
  4. Step 4: Simplify right side
    79,642.40x = 4,789,089,374.60
  5. Step 5: Solve for x
    x = 4,789,089,374.60/79,642.40
  6. Step 6: Final answer
    x = 60,132.41

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1.5x scale

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.