Home / 79,980.42-120,044.45-40,565.22

Finding the Fourth Proportional to 79,980.42, 120,044.45 and 40,565.22

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Solution

The fourth proportional to 79,980.42, 120,044.45 and 40,565.22 is: 60,885.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,980.42 : 120,044.45 = 40,565.22 : x
  2. Step 2: Convert to fraction form
    79,980.42/120,044.45 = 40,565.22/x
  3. Step 3: Cross multiply
    79,980.42x = 120,044.45 × 40,565.22
  4. Step 4: Simplify right side
    79,980.42x = 4,869,629,321.20
  5. Step 5: Solve for x
    x = 4,869,629,321.20/79,980.42
  6. Step 6: Final answer
    x = 60,885.27

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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.